diff --git a/applications/debug/unit_tests/subghz/subghz_test.c b/applications/debug/unit_tests/subghz/subghz_test.c
index 1dee1d59e..705d6f2f6 100644
--- a/applications/debug/unit_tests/subghz/subghz_test.c
+++ b/applications/debug/unit_tests/subghz/subghz_test.c
@@ -12,8 +12,9 @@
 #define KEYSTORE_DIR_NAME EXT_PATH("subghz/assets/keeloq_mfcodes")
 #define CAME_ATOMO_DIR_NAME EXT_PATH("subghz/assets/came_atomo")
 #define NICE_FLOR_S_DIR_NAME EXT_PATH("subghz/assets/nice_flor_s")
+#define ALUTECH_AT_4N_DIR_NAME EXT_PATH("subghz/assets/alutech_at_4n")
 #define TEST_RANDOM_DIR_NAME EXT_PATH("unit_tests/subghz/test_random_raw.sub")
-#define TEST_RANDOM_COUNT_PARSE 273
+#define TEST_RANDOM_COUNT_PARSE 304
 #define TEST_TIMEOUT 10000
 
 static SubGhzEnvironment* environment_handler;
@@ -43,6 +44,8 @@ static void subghz_test_init(void) {
         environment_handler, CAME_ATOMO_DIR_NAME);
     subghz_environment_set_nice_flor_s_rainbow_table_file_name(
         environment_handler, NICE_FLOR_S_DIR_NAME);
+    subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+        environment_handler, ALUTECH_AT_4N_DIR_NAME);
     subghz_environment_set_protocol_registry(
         environment_handler, (void*)&subghz_protocol_registry);
 
@@ -489,6 +492,14 @@ MU_TEST(subghz_decoder_linear_test) {
         "Test decoder " SUBGHZ_PROTOCOL_LINEAR_NAME " error\r\n");
 }
 
+MU_TEST(subghz_decoder_linear_delta3_test) {
+    mu_assert(
+        subghz_decoder_test(
+            EXT_PATH("unit_tests/subghz/linear_delta3_raw.sub"),
+            SUBGHZ_PROTOCOL_LINEAR_DELTA3_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_LINEAR_DELTA3_NAME " error\r\n");
+}
+
 MU_TEST(subghz_decoder_megacode_test) {
     mu_assert(
         subghz_decoder_test(
@@ -604,6 +615,21 @@ MU_TEST(subghz_decoder_holtek_ht12x_test) {
         "Test decoder " SUBGHZ_PROTOCOL_HOLTEK_HT12X_NAME " error\r\n");
 }
 
+MU_TEST(subghz_decoder_dooya_test) {
+    mu_assert(
+        subghz_decoder_test(
+            EXT_PATH("unit_tests/subghz/dooya_raw.sub"), SUBGHZ_PROTOCOL_DOOYA_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_DOOYA_NAME " error\r\n");
+}
+
+MU_TEST(subghz_decoder_alutech_at_4n_test) {
+    mu_assert(
+        subghz_decoder_test(
+            EXT_PATH("unit_tests/subghz/alutech_at_4n_raw.sub"),
+            SUBGHZ_PROTOCOL_ALUTECH_AT_4N_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_ALUTECH_AT_4N_NAME " error\r\n");
+}
+
 //test encoders
 MU_TEST(subghz_encoder_princeton_test) {
     mu_assert(
@@ -647,6 +673,12 @@ MU_TEST(subghz_encoder_linear_test) {
         "Test encoder " SUBGHZ_PROTOCOL_LINEAR_NAME " error\r\n");
 }
 
+MU_TEST(subghz_encoder_linear_delta3_test) {
+    mu_assert(
+        subghz_encoder_test(EXT_PATH("unit_tests/subghz/linear_delta3.sub")),
+        "Test encoder " SUBGHZ_PROTOCOL_LINEAR_DELTA3_NAME " error\r\n");
+}
+
 MU_TEST(subghz_encoder_megacode_test) {
     mu_assert(
         subghz_encoder_test(EXT_PATH("unit_tests/subghz/megacode.sub")),
@@ -743,6 +775,12 @@ MU_TEST(subghz_encoder_holtek_ht12x_test) {
         "Test encoder " SUBGHZ_PROTOCOL_HOLTEK_HT12X_NAME " error\r\n");
 }
 
+MU_TEST(subghz_encoder_dooya_test) {
+    mu_assert(
+        subghz_encoder_test(EXT_PATH("unit_tests/subghz/dooya.sub")),
+        "Test encoder " SUBGHZ_PROTOCOL_DOOYA_NAME " error\r\n");
+}
+
 MU_TEST(subghz_random_test) {
     mu_assert(subghz_decode_random_test(TEST_RANDOM_DIR_NAME), "Random test error\r\n");
 }
@@ -772,6 +810,7 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_decoder_somfy_telis_test);
     MU_RUN_TEST(subghz_decoder_star_line_test);
     MU_RUN_TEST(subghz_decoder_linear_test);
+    MU_RUN_TEST(subghz_decoder_linear_delta3_test);
     MU_RUN_TEST(subghz_decoder_megacode_test);
     MU_RUN_TEST(subghz_decoder_secplus_v1_test);
     MU_RUN_TEST(subghz_decoder_secplus_v2_test);
@@ -788,6 +827,8 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_decoder_ansonic_test);
     MU_RUN_TEST(subghz_decoder_smc5326_test);
     MU_RUN_TEST(subghz_decoder_holtek_ht12x_test);
+    MU_RUN_TEST(subghz_decoder_dooya_test);
+    MU_RUN_TEST(subghz_decoder_alutech_at_4n_test);
 
     MU_RUN_TEST(subghz_encoder_princeton_test);
     MU_RUN_TEST(subghz_encoder_came_test);
@@ -796,6 +837,7 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_encoder_nice_flo_test);
     MU_RUN_TEST(subghz_encoder_keelog_test);
     MU_RUN_TEST(subghz_encoder_linear_test);
+    MU_RUN_TEST(subghz_encoder_linear_delta3_test);
     MU_RUN_TEST(subghz_encoder_megacode_test);
     MU_RUN_TEST(subghz_encoder_holtek_test);
     MU_RUN_TEST(subghz_encoder_secplus_v1_test);
@@ -812,6 +854,7 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_encoder_ansonic_test);
     MU_RUN_TEST(subghz_encoder_smc5326_test);
     MU_RUN_TEST(subghz_encoder_holtek_ht12x_test);
+    MU_RUN_TEST(subghz_encoder_dooya_test);
 
     MU_RUN_TEST(subghz_random_test);
     subghz_test_deinit();
diff --git a/applications/main/bad_usb/bad_usb_script.c b/applications/main/bad_usb/bad_usb_script.c
index 1416acfee..0fadbcc07 100644
--- a/applications/main/bad_usb/bad_usb_script.c
+++ b/applications/main/bad_usb/bad_usb_script.c
@@ -694,7 +694,7 @@ void bad_usb_script_set_keyboard_layout(BadUsbScript* bad_usb, FuriString* layou
     }
 
     File* layout_file = storage_file_alloc(furi_record_open(RECORD_STORAGE));
-    if(!furi_string_empty(layout_path)) {
+    if(!furi_string_empty(layout_path)) { //-V1051
         if(storage_file_open(
                layout_file, furi_string_get_cstr(layout_path), FSAM_READ, FSOM_OPEN_EXISTING)) {
             uint16_t layout[128];
diff --git a/applications/main/subghz/subghz.c b/applications/main/subghz/subghz.c
index c39c35679..049b7f55c 100644
--- a/applications/main/subghz/subghz.c
+++ b/applications/main/subghz/subghz.c
@@ -281,6 +281,8 @@ SubGhz* subghz_alloc(bool alloc_for_tx_only) {
     subghz->txrx->environment = subghz_environment_alloc();
     subghz_environment_set_came_atomo_rainbow_table_file_name(
         subghz->txrx->environment, EXT_PATH("subghz/assets/came_atomo"));
+    subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+        subghz->txrx->environment, EXT_PATH("subghz/assets/alutech_at_4n"));
     subghz_environment_set_nice_flor_s_rainbow_table_file_name(
         subghz->txrx->environment, EXT_PATH("subghz/assets/nice_flor_s"));
     subghz_environment_set_protocol_registry(
diff --git a/applications/main/subghz/subghz_cli.c b/applications/main/subghz/subghz_cli.c
index 75a648028..fa9cf5bd9 100644
--- a/applications/main/subghz/subghz_cli.c
+++ b/applications/main/subghz/subghz_cli.c
@@ -253,6 +253,8 @@ void subghz_cli_command_rx(Cli* cli, FuriString* args, void* context) {
     subghz_environment_load_keystore(environment, EXT_PATH("subghz/assets/keeloq_mfcodes_user"));
     subghz_environment_set_came_atomo_rainbow_table_file_name(
         environment, EXT_PATH("subghz/assets/came_atomo"));
+    subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+        environment, EXT_PATH("subghz/assets/alutech_at_4n"));
     subghz_environment_set_nice_flor_s_rainbow_table_file_name(
         environment, EXT_PATH("subghz/assets/nice_flor_s"));
     subghz_environment_set_protocol_registry(environment, (void*)&subghz_protocol_registry);
@@ -448,6 +450,8 @@ void subghz_cli_command_decode_raw(Cli* cli, FuriString* args, void* context) {
         }
         subghz_environment_set_came_atomo_rainbow_table_file_name(
             environment, EXT_PATH("subghz/assets/came_atomo"));
+        subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+            environment, EXT_PATH("subghz/assets/alutech_at_4n"));
         subghz_environment_set_nice_flor_s_rainbow_table_file_name(
             environment, EXT_PATH("subghz/assets/nice_flor_s"));
         subghz_environment_set_protocol_registry(environment, (void*)&subghz_protocol_registry);
diff --git a/assets/resources/subghz/assets/alutech_at_4n b/assets/resources/subghz/assets/alutech_at_4n
new file mode 100644
index 000000000..5d7beacec
--- /dev/null
+++ b/assets/resources/subghz/assets/alutech_at_4n
@@ -0,0 +1,6 @@
+Filetype: Flipper SubGhz Keystore RAW File
+Version: 0
+Encryption: 1
+IV: 88 64 A6 A6 44 47 67 8A D6 32 36 F6 B9 06 57 31
+Encrypt_data: RAW
+E811BD4F0955D217AE6677906E799D45D8DAAFD1F7923E1660B5E24574631B60
\ No newline at end of file
diff --git a/assets/unit_tests/subghz/alutech_at_4n_raw.sub b/assets/unit_tests/subghz/alutech_at_4n_raw.sub
new file mode 100644
index 000000000..ae5db9715
--- /dev/null
+++ b/assets/unit_tests/subghz/alutech_at_4n_raw.sub
@@ -0,0 +1,10 @@
+Filetype: Flipper SubGhz RAW File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: RAW
+RAW_Data: -854 811 -454 811 -444 409 -838 811 -454 823 -432 385 -842 811 -454 389 -854 821 -418 837 -444 401 -850 417 -854 395 -830 417 -846 819 -432 811 -448 789 -444 839 -454 401 -856 381 -850 825 -410 841 -418 417 -834 411 -840 827 -442 417 -844 799 -472 809 -420 411 -842 419 -848 397 -822 413 -850 799 -486 381 -848 415 -854 423 -16394 449 -358 437 -386 411 -384 449 -382 417 -384 419 -386 417 -386 419 -388 419 -388 419 -388 419 -390 437 -4036 421 -810 425 -820 393 -866 813 -422 415 -856 397 -858 811 -456 427 -820 815 -416 419 -850 401 -854 805 -420 835 -444 409 -842 809 -454 433 -820 421 -838 813 -420 417 -822 435 -820 419 -834 431 -852 411 -866 805 -420 815 -444 805 -454 403 -824 809 -448 819 -448 413 -844 811 -446 811 -456 409 -816 809 -456 389 -866 387 -842 809 -454 827 -432 413 -850 829 -428 809 -452 381 -852 799 -452 413 -852 807 -450 801 -444 409 -872 411 -840 413 -812 413 -832 807 -450 815 -442 801 -454 809 -454 429 -820 419 -838 811 -456 785 -428 409 -842 439 -824 813 -448 415 -858 819 -418 831 -426 449 -808 427 -820 393 -866 421 -808 825 -436 413 -852 403 -884 421 -16394 407 -478 257 -574 229 -576 229 -564 231 -592 267 -490 305 -520 307 -486 309 -522 307 -458 341 -486 337 -4096 343 -882 389 -880 341 -874 807 -476 351 -882 397 -860 807 -450 431 -824 811 -450 399 -824 417 -844 817 -432 807 -448 411 -872 801 -460 417 -810 425 -836 809 -420 411 -838 409 -852 417 -844 425 -852 385 -872 801 -426 841 -420 811 -422 409 -844 809 -454 823 -432 415 -842 835 -450 805 -454 403 -822 809 -450 399 -826 417 -844 821 -434 807 -448 411 -876 801 -440 807 -450 383 -850 833 -416 415 -852 807 -456 811 -444 411 -838 419 -848 401 -852 377 -850 819 -454 795 -436 809 -448 821 -448 411 -846 417 -842 817 -432 811 -412 411 -864 417 -844 791 -438 415 -876 793 -458 809 -450 383 -832 413 -840 407 -866 387 -844 821 -434 413 -874 377 -868 419 -16408 411 -392 421 -390 421 -388 421 -376 427 -394 433 -388 409 -386 411 -384 449 -382 419 -384 419 -384 419 -4018 343 -89684 97 -430 65 -166 163 -66 231 -100 161 -392 161 -64 229 -1056 97 -198 97 -198 259 -166 691 -66 395 -98 131 -100 99 -66 199 -198 1657 -406 365 -462 361 -436 357 -438 387 -444 353 -444 385 -414 387 -448 355 -448 355 -444 395 -394 399 -4050 819 -434 811 -414 819 -450 409 -852 809 -450 805 -448 805 -446 831 -428 409 -846 389 -854 395 -862 811
+RAW_Data: -452 783 -462 811 -446 411 -874 383 -852 403 -852 777 -450 411 -838 805 -452 397 -858 805 -484 387 -872 803 -442 805 -448 383 -846 797 -484 777 -474 381 -846 831 -430 807 -482 387 -852 817 -418 805 -452 823 -430 385 -878 377 -876 411 -846 391 -884 811 -444 805 -420 415 -846 399 -852 807 -452 805 -444 803 -450 803 -454 807 -452 397 -850 395 -862 385 -844 427 -840 809 -456 379 -876 407 -880 383 -846 819 -432 387 -872 375 -854 413 -846 387 -886 779 -476 803 -450 801 -444 415 -846 793 -438 415 -846 417 -822 407 -852 417 -852 817 -444 409 -16426 443 -358 431 -388 409 -386 447 -350 449 -382 419 -386 419 -386 417 -386 419 -388 453 -354 453 -356 445 -4018 813 -416 839 -420 817 -418 451 -816 835 -444 809 -450 811 -440 803 -444 407 -830 419 -844 419 -836 805 -420 835 -444 803 -446 409 -868 421 -814 431 -822 807 -452 397 -828 819 -452 415 -856 787 -454 419 -848 837 -410 839 -416 395 -866 787 -450 811 -454 407 -850 805 -454 805 -470 381 -850 833 -418 805 -438 809 -448 397 -860 421 -810 431 -856 381 -888 791 -424 841 -422 415 -820 437 -818 813 -450 813 -454 803 -446 817 -448 829 -410 451 -816 403 -818 413 -850 409 -846 811 -448 415 -834 413 -884 399 -822 815 -452 381 -852 407 -846 415 -846 385 -866 807 -456 809 -446 835 -412 407 -834 815 -450 415 -822 405 -848 419 -844 427 -852 809 -442 407 -16420 425 -422 335 -486 309 -486 309 -522 307 -492 337 -454 351 -466 329 -498 327 -468 323 -472 355 -442 355 -4120 757 -456 773 -478 781 -458 381 -874 771 -482 801 -470 777 -482 805 -450 399 -826 415 -846 387 -866 805 -420 813 -446 831 -458 417 -846 401 -852 381 -840 835 -420 415 -846 795 -440 413 -842 835 -450 407 -860 811 -418 815 -424 413 -842 807 -454 823 -428 411 -842 801 -454 807 -488 401 -822 805 -448 803 -446 803 -426 447 -844 397 -856 381 -870 411 -870 777 -452 829 -432 385 -840 419 -848 797 -438 809 -450 815 -448 833 -440 803 -452 411 -820 415 -848 409 -844 411 -846 779 -462 409 -848 409 -864 421 -844 793 -438 385 -846 419 -850 399 -838 415 -872 777 -478 803 -448 799 -442 417 -848 799 -438 415 -842 409 -826 417 -844 427 -854 807 -452 409 -16402 461 -352 421 -386 421 -386 419 -388 453 -354 453 -354 447 -378 409 -386 439 -376 421 -410 385 -414 415 -4024 831 -418 809 -438 807 -444 409 -838 809 -456 821 -432 841 -414 255 -87638 131 -66 97 -296 97 -264 131 -196 65 -132 231 -632 197 -664 131
+RAW_Data: -500 395 -132 461 -132 689 -98 2685 -100 997 -1508 99 -2186 231 -166 231 -134 133 -932 65 -268 99 -132 65 -200 97 -68 163 -234 65 -68 99 -930 331 -98 763 -100 2025 -418 353 -446 385 -414 385 -416 387 -448 355 -442 383 -412 397 -424 405 -388 409 -418 379 -418 415 -4014 443 -814 413 -822 817 -454 801 -436 409 -842 409 -866 415 -838 441 -836 811 -432 387 -842 419 -846 793 -440 807 -448 837 -446 803 -448 835 -420 807 -448 383 -868 379 -850 409 -866 387 -844 825 -468 381 -884 793 -426 415 -842 427 -818 817 -440 407 -830 419 -844 429 -852 387 -872 409 -826 811 -450 813 -418 837 -412 409 -864 417 -844 397 -852 809 -454 805 -448 409 -840 809 -420 813 -458 409 -844 407 -860 385 -878 793 -470 809 -420 817 -416 417 -850 403 -852 381 -852 827 -428 447 -844 401 -854 813 -424 421 -840 419 -812 823 -438 415 -846 409 -844 415 -846 389 -868 809 -458 803 -416 409 -866 813 -418 417 -854 397 -862 419 -842 401 -854 415 -16404 435 -376 409 -410 407 -384 439 -384 409 -410 417 -368 421 -410 407 -378 447 -376 415 -378 447 -380 407 -4022 421 -844 423 -822 821 -418 807 -454 429 -820 421 -836 439 -854 421 -810 821 -436 385 -840 441 -822 813 -448 811 -452 803 -444 835 -444 801 -446 801 -426 447 -808 423 -834 413 -852 407 -840 819 -452 389 -856 813 -444 409 -848 415 -812 809 -458 409 -848 411 -842 415 -844 421 -834 415 -834 835 -418 819 -418 807 -456 393 -856 393 -866 421 -846 799 -474 809 -420 421 -836 811 -420 813 -458 407 -850 413 -842 415 -846 819 -428 835 -416 835 -412 407 -832 421 -842 423 -822 813 -446 407 -864 419 -846 799 -440 413 -850 419 -816 797 -442 413 -850 409 -844 417 -846 423 -834 841 -428 805 -414 435 -822 813 -450 413 -822 437 -818 421 -844 429 -854 411 -16406 427 -418 309 -522 307 -488 303 -520 289 -530 295 -500 323 -470 325 -504 321 -476 321 -476 355 -444 357 -4080 355 -906 339 -882 771 -476 777 -486 381 -874 383 -884 375 -884 387 -852 819 -418 417 -846 399 -854 809 -418 815 -446 837 -420 839 -454 801 -436 807 -452 399 -826 417 -844 391 -852 423 -838 809 -452 431 -852 811 -414 409 -836 417 -844 821 -432 385 -876 385 -850 409 -848 415 -854 421 -840 817 -420 815 -424 817 -448 409 -848 413 -844 389 -854 815 -446 829 -426 413 -842 819 -434 809 -446 409 -838 419 -846 401 -852 811 -456 811 -444 803 -418 417 -848 403 -850 381 -864 805 -450 395 -866 419 -848 801 -474 381 -848 411
+RAW_Data: -842 807 -446 381 -872 377 -866 421 -846 401 -854 813 -458 779 -446 407 -832 811 -450 415 -856 399 -856 385 -876 399 -854 411 -16398 435 -392 395 -400 421 -412 385 -412 417 -384 415 -386 415 -418 385 -420 385 -420 417 -390 417 -388 419 -4020 421 -838 421 -812 819 -434 809 -448 397 -864 421 -844 401 -850 413 -858 789 -426 413 -844 419 -836 807 -424 843 -410 829 -442 835 -446 801 -454 809 -420 417 -832 411 -848 249 -88020 133 -896 231 -466 67 -1062 131 -728 163 -98 621 -98 1051 -100 680933 -452 269 -522 273 -554 273 -558 239 -558 271 -490 337 -488 321 -498 295 -500 325 -470 323 -474 353 -4082 757 -492 375 -880 357 -872 777 -486 773 -480 807 -450 805 -444 805 -476 407 -812 413 -834 411 -848 407 -828 813 -450 811 -458 803 -448 835 -446 791 -424 447 -808 427 -818 423 -840 419 -848 401 -854 811 -458 809 -446 801 -416 439 -826 415 -848 813 -430 809 -450 395 -866 419 -846 403 -850 413 -820 407 -848 415 -846 781 -460 805 -446 803 -474 803 -448 835 -420 805 -454 389 -836 409 -842 407 -866 419 -842 399 -854 809 -456 809 -446 409 -840 385 -844 819 -434 809 -450 395 -860 811 -452 393 -886 779 -446 409 -830 419 -842 423 -818 423 -838 419 -844 799 -472 809 -454 385 -844 807 -454 391 -854 395 -860 385 -844 429 -852 809 -454 385 -874 409 -16402 427 -368 455 -358 433 -380 443 -378 415 -378 447 -380 411 -384 409 -406 421 -408 387 -412 415 -386 415 -4026 831 -398 441 -810 417 -832 837 -418 833 -444 803 -446 833 -448 801 -424 449 -810 427 -820 423 -838 419 -812 825 -438 841 -416 845 -446 825 -418 809 -422 419 -822 433 -822 419 -844 425 -820 421 -840 841 -458 797 -436 809 -414 435 -822 419 -844 819 -432 809 -448 395 -864 421 -846 407 -850 411 -808 433 -824 419 -844 819 -432 809 -446 823 -416 837 -454 807 -440 809 -414 435 -828 417 -844 425 -828 415 -848 419 -818 839 -446 807 -422 411 -844 419 -846 795 -438 807 -450 395 -866 811 -454 391 -854 845 -412 407 -832 421 -842 419 -832 411 -824 435 -820 815 -450 811 -460 409 -850 799 -454 407 -824 413 -848 411 -842 415 -844 815 -432 415 -848 405 -16400 441 -432 327 -492 301 -516 307 -484 309 -520 307 -492 339 -454 337 -490 331 -464 327 -500 325 -472 325 -4110 763 -480 373 -852 385 -878 759 -482 775 -474 813 -458 781 -482 789 -454 415 -846 397 -820 411 -840 405 -852 809 -450 811 -458 809 -450 817 -448 803 -426 411 -844 391 -854 393 -866 419 -848 399 -854 811
+RAW_Data: -454 811 -444 803 -418 417 -846 403 -850 809 -452 805 -444 411 -840 419 -846 407 -850 415 -836 385 -842 419 -850 797 -438 807 -452 817 -446 801 -486 813 -444 775 -450 409 -838 419 -810 431 -854 379 -848 405 -884 809 -450 817 -430 385 -874 375 -856 811 -446 809 -422 421 -836 835 -452 419 -848 783 -460 409 -814 407 -856 415 -846 383 -870 381 -848 819 -450 811 -472 383 -850 803 -454 415 -838 399 -854 379 -850 407 -848 811 -448 415 -872 387 -16400 451 -374 445 -374 415 -378 415 -412 411 -384 405 -422 409 -410 387 -410 417 -382 417 -384 415 -420 383 -4030 827 -428 411 -842 425 -820 817 -418 833 -426 845 -452 815 -428 837 -416 409 -842 421 -810 431 -820 421 -89106 265 -662 99 -532 131 -598 97 -668 65 -300 761 -198 231 -132 265 -100 233 -100 197
diff --git a/assets/unit_tests/subghz/dooya.sub b/assets/unit_tests/subghz/dooya.sub
new file mode 100644
index 000000000..0767a1a73
--- /dev/null
+++ b/assets/unit_tests/subghz/dooya.sub
@@ -0,0 +1,7 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: Dooya
+Bit: 40
+Key: 00 00 00 E1 DC 03 05 11
diff --git a/assets/unit_tests/subghz/dooya_raw.sub b/assets/unit_tests/subghz/dooya_raw.sub
new file mode 100644
index 000000000..6c3ca1627
--- /dev/null
+++ b/assets/unit_tests/subghz/dooya_raw.sub
@@ -0,0 +1,8 @@
+Filetype: Flipper SubGhz RAW File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: RAW
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diff --git a/assets/unit_tests/subghz/linear_delta3.sub b/assets/unit_tests/subghz/linear_delta3.sub
new file mode 100644
index 000000000..f00507428
--- /dev/null
+++ b/assets/unit_tests/subghz/linear_delta3.sub
@@ -0,0 +1,7 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: LinearDelta3
+Bit: 8
+Key: 00 00 00 00 00 00 00 D0
diff --git a/assets/unit_tests/subghz/linear_delta3_raw.sub b/assets/unit_tests/subghz/linear_delta3_raw.sub
new file mode 100644
index 000000000..1973622a5
--- /dev/null
+++ b/assets/unit_tests/subghz/linear_delta3_raw.sub
@@ -0,0 +1,8 @@
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diff --git a/assets/unit_tests/subghz/test_random_raw.sub b/assets/unit_tests/subghz/test_random_raw.sub
index be635f04d..44e1613c7 100644
--- a/assets/unit_tests/subghz/test_random_raw.sub
+++ b/assets/unit_tests/subghz/test_random_raw.sub
@@ -173,3 +173,13 @@ RAW_Data: 107 -1501 77 -1518 53 -704 113 -390 107 -650 73 -932 51 -3641 169 -704
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+RAW_Data: -500 395 -132 461 -132 689 -98 2685 -100 997 -1508 99 -2186 231 -166 231 -134 133 -932 65 -268 99 -132 65 -200 97 -68 163 -234 65 -68 99 -930 331 -98 763 -100 2025 -418 353 -446 385 -414 385 -416 387 -448 355 -442 383 -412 397 -424 405 -388 409 -418 379 -418 415 -4014 443 -814 413 -822 817 -454 801 -436 409 -842 409 -866 415 -838 441 -836 811 -432 387 -842 419 -846 793 -440 807 -448 837 -446 803 -448 835 -420 807 -448 383 -868 379 -850 409 -866 387 -844 825 -468 381 -884 793 -426 415 -842 427 -818 817 -440 407 -830 419 -844 429 -852 387 -872 409 -826 811 -450 813 -418 837 -412 409 -864 417 -844 397 -852 809 -454 805 -448 409 -840 809 -420 813 -458 409 -844 407 -860 385 -878 793 -470 809 -420 817 -416 417 -850 403 -852 381 -852 827 -428 447 -844 401 -854 813 -424 421 -840 419 -812 823 -438 415 -846 409 -844 415 -846 389 -868 809 -458 803 -416 409 -866 813 -418 417 -854 397 -862 419 -842 401 -854 415 -16404 435 -376 409 -410 407 -384 439 -384 409 -410 417 -368 421 -410 407 -378 447 -376 415 -378 447 -380 407 -4022 421 -844 423 -822 821 -418 807 -454 429 -820 421 -836 439 -854 421 -810 821 -436 385 -840 441 -822 813 -448 811 -452 803 -444 835 -444 801 -446 801 -426 447 -808 423 -834 413 -852 407 -840 819 -452 389 -856 813 -444 409 -848 415 -812 809 -458 409 -848 411 -842 415 -844 421 -834 415 -834 835 -418 819 -418 807 -456 393 -856 393 -866 421 -846 799 -474 809 -420 421 -836 811 -420 813 -458 407 -850 413 -842 415 -846 819 -428 835 -416 835 -412 407 -832 421 -842 423 -822 813 -446 407 -864 419 -846 799 -440 413 -850 419 -816 797 -442 413 -850 409 -844 417 -846 423 -834 841 -428 805 -414 435 -822 813 -450 413 -822 437 -818 421 -844 429 -854 411 -16406 427 -418 309 -522 307 -488 303 -520 289 -530 295 -500 323 -470 325 -504 321 -476 321 -476 355 -444 357 -4080 355 -906 339 -882 771 -476 777 -486 381 -874 383 -884 375 -884 387 -852 819 -418 417 -846 399 -854 809 -418 815 -446 837 -420 839 -454 801 -436 807 -452 399 -826 417 -844 391 -852 423 -838 809 -452 431 -852 811 -414 409 -836 417 -844 821 -432 385 -876 385 -850 409 -848 415 -854 421 -840 817 -420 815 -424 817 -448 409 -848 413 -844 389 -854 815 -446 829 -426 413 -842 819 -434 809 -446 409 -838 419 -846 401 -852 811 -456 811 -444 803 -418 417 -848 403 -850 381 -864 805 -450 395 -866 419 -848 801 -474 381 -848 411
+RAW_Data: -842 807 -446 381 -872 377 -866 421 -846 401 -854 813 -458 779 -446 407 -832 811 -450 415 -856 399 -856 385 -876 399 -854 411 -16398 435 -392 395 -400 421 -412 385 -412 417 -384 415 -386 415 -418 385 -420 385 -420 417 -390 417 -388 419 -4020 421 -838 421 -812 819 -434 809 -448 397 -864 421 -844 401 -850 413 -858 789 -426 413 -844 419 -836 807 -424 843 -410 829 -442 835 -446 801 -454 809 -420 417 -832 411 -848 249 -88020 133 -896 231 -466 67 -1062 131 -728 163 -98 621 -98 1051 -100 680933 -452 269 -522 273 -554 273 -558 239 -558 271 -490 337 -488 321 -498 295 -500 325 -470 323 -474 353 -4082 757 -492 375 -880 357 -872 777 -486 773 -480 807 -450 805 -444 805 -476 407 -812 413 -834 411 -848 407 -828 813 -450 811 -458 803 -448 835 -446 791 -424 447 -808 427 -818 423 -840 419 -848 401 -854 811 -458 809 -446 801 -416 439 -826 415 -848 813 -430 809 -450 395 -866 419 -846 403 -850 413 -820 407 -848 415 -846 781 -460 805 -446 803 -474 803 -448 835 -420 805 -454 389 -836 409 -842 407 -866 419 -842 399 -854 809 -456 809 -446 409 -840 385 -844 819 -434 809 -450 395 -860 811 -452 393 -886 779 -446 409 -830 419 -842 423 -818 423 -838 419 -844 799 -472 809 -454 385 -844 807 -454 391 -854 395 -860 385 -844 429 -852 809 -454 385 -874 409 -16402 427 -368 455 -358 433 -380 443 -378 415 -378 447 -380 411 -384 409 -406 421 -408 387 -412 415 -386 415 -4026 831 -398 441 -810 417 -832 837 -418 833 -444 803 -446 833 -448 801 -424 449 -810 427 -820 423 -838 419 -812 825 -438 841 -416 845 -446 825 -418 809 -422 419 -822 433 -822 419 -844 425 -820 421 -840 841 -458 797 -436 809 -414 435 -822 419 -844 819 -432 809 -448 395 -864 421 -846 407 -850 411 -808 433 -824 419 -844 819 -432 809 -446 823 -416 837 -454 807 -440 809 -414 435 -828 417 -844 425 -828 415 -848 419 -818 839 -446 807 -422 411 -844 419 -846 795 -438 807 -450 395 -866 811 -454 391 -854 845 -412 407 -832 421 -842 419 -832 411 -824 435 -820 815 -450 811 -460 409 -850 799 -454 407 -824 413 -848 411 -842 415 -844 815 -432 415 -848 405 -16400 441 -432 327 -492 301 -516 307 -484 309 -520 307 -492 339 -454 337 -490 331 -464 327 -500 325 -472 325 -4110 763 -480 373 -852 385 -878 759 -482 775 -474 813 -458 781 -482 789 -454 415 -846 397 -820 411 -840 405 -852 809 -450 811 -458 809 -450 817 -448 803 -426 411 -844 391 -854 393 -866 419 -848 399 -854 811
+RAW_Data: -454 811 -444 803 -418 417 -846 403 -850 809 -452 805 -444 411 -840 419 -846 407 -850 415 -836 385 -842 419 -850 797 -438 807 -452 817 -446 801 -486 813 -444 775 -450 409 -838 419 -810 431 -854 379 -848 405 -884 809 -450 817 -430 385 -874 375 -856 811 -446 809 -422 421 -836 835 -452 419 -848 783 -460 409 -814 407 -856 415 -846 383 -870 381 -848 819 -450 811 -472 383 -850 803 -454 415 -838 399 -854 379 -850 407 -848 811 -448 415 -872 387 -16400 451 -374 445 -374 415 -378 415 -412 411 -384 405 -422 409 -410 387 -410 417 -382 417 -384 415 -420 383 -4030 827 -428 411 -842 425 -820 817 -418 833 -426 845 -452 815 -428 837 -416 409 -842 421 -810 431 -820 421 -89106 265 -662 99 -532 131 -598 97 -668 65 -300 761 -198 231 -132 265 -100 233 -100 197
diff --git a/firmware/targets/f7/api_symbols.csv b/firmware/targets/f7/api_symbols.csv
index 9eb21d3e7..93bea2379 100644
--- a/firmware/targets/f7/api_symbols.csv
+++ b/firmware/targets/f7/api_symbols.csv
@@ -2597,12 +2597,14 @@ Function,+,subghz_block_generic_get_preset_name,void,"const char*, FuriString*"
 Function,+,subghz_block_generic_serialize,_Bool,"SubGhzBlockGeneric*, FlipperFormat*, SubGhzRadioPreset*"
 Function,+,subghz_environment_alloc,SubGhzEnvironment*,
 Function,+,subghz_environment_free,void,SubGhzEnvironment*
+Function,+,subghz_environment_get_alutech_at_4n_rainbow_table_file_name,const char*,SubGhzEnvironment*
 Function,+,subghz_environment_get_came_atomo_rainbow_table_file_name,const char*,SubGhzEnvironment*
 Function,+,subghz_environment_get_keystore,SubGhzKeystore*,SubGhzEnvironment*
 Function,+,subghz_environment_get_nice_flor_s_rainbow_table_file_name,const char*,SubGhzEnvironment*
 Function,+,subghz_environment_get_protocol_name_registry,const char*,"SubGhzEnvironment*, size_t"
 Function,+,subghz_environment_get_protocol_registry,void*,SubGhzEnvironment*
 Function,+,subghz_environment_load_keystore,_Bool,"SubGhzEnvironment*, const char*"
+Function,+,subghz_environment_set_alutech_at_4n_rainbow_table_file_name,void,"SubGhzEnvironment*, const char*"
 Function,+,subghz_environment_set_came_atomo_rainbow_table_file_name,void,"SubGhzEnvironment*, const char*"
 Function,+,subghz_environment_set_nice_flor_s_rainbow_table_file_name,void,"SubGhzEnvironment*, const char*"
 Function,+,subghz_environment_set_protocol_registry,void,"SubGhzEnvironment*, void*"
diff --git a/lib/subghz/environment.c b/lib/subghz/environment.c
index 0a4b7b606..b39b259d4 100644
--- a/lib/subghz/environment.c
+++ b/lib/subghz/environment.c
@@ -6,6 +6,7 @@ struct SubGhzEnvironment {
     const SubGhzProtocolRegistry* protocol_registry;
     const char* came_atomo_rainbow_table_file_name;
     const char* nice_flor_s_rainbow_table_file_name;
+    const char* alutech_at_4n_rainbow_table_file_name;
 };
 
 SubGhzEnvironment* subghz_environment_alloc() {
@@ -57,6 +58,21 @@ const char*
     return instance->came_atomo_rainbow_table_file_name;
 }
 
+void subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+    SubGhzEnvironment* instance,
+    const char* filename) {
+    furi_assert(instance);
+
+    instance->alutech_at_4n_rainbow_table_file_name = filename;
+}
+
+const char*
+    subghz_environment_get_alutech_at_4n_rainbow_table_file_name(SubGhzEnvironment* instance) {
+    furi_assert(instance);
+
+    return instance->alutech_at_4n_rainbow_table_file_name;
+}
+
 void subghz_environment_set_nice_flor_s_rainbow_table_file_name(
     SubGhzEnvironment* instance,
     const char* filename) {
diff --git a/lib/subghz/environment.h b/lib/subghz/environment.h
index e994f7c97..7bd38ba2f 100644
--- a/lib/subghz/environment.h
+++ b/lib/subghz/environment.h
@@ -52,6 +52,23 @@ void subghz_environment_set_came_atomo_rainbow_table_file_name(
  */
 const char* subghz_environment_get_came_atomo_rainbow_table_file_name(SubGhzEnvironment* instance);
 
+/**
+ * Set filename to work with Alutech at-4n.
+ * @param instance Pointer to a SubGhzEnvironment instance
+ * @param filename Full path to the file
+ */
+void subghz_environment_set_alutech_at_4n_rainbow_table_file_name(
+    SubGhzEnvironment* instance,
+    const char* filename);
+
+/**
+ * Get filename to work with Alutech at-4n.
+ * @param instance Pointer to a SubGhzEnvironment instance
+ * @return Full path to the file
+ */
+const char*
+    subghz_environment_get_alutech_at_4n_rainbow_table_file_name(SubGhzEnvironment* instance);
+
 /**
  * Set filename to work with Nice Flor-S.
  * @param instance Pointer to a SubGhzEnvironment instance
diff --git a/lib/subghz/protocols/alutech_at_4n.c b/lib/subghz/protocols/alutech_at_4n.c
new file mode 100644
index 000000000..6bcf9f25d
--- /dev/null
+++ b/lib/subghz/protocols/alutech_at_4n.c
@@ -0,0 +1,455 @@
+#include "alutech_at_4n.h"
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+#define TAG "SubGhzProtocoAlutech_at_4n"
+
+#define SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE 0xFFFFFFFF
+
+static const SubGhzBlockConst subghz_protocol_alutech_at_4n_const = {
+    .te_short = 400,
+    .te_long = 800,
+    .te_delta = 140,
+    .min_count_bit_for_found = 72,
+};
+
+struct SubGhzProtocolDecoderAlutech_at_4n {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+
+    uint64_t data;
+    uint32_t crc;
+    uint16_t header_count;
+
+    const char* alutech_at_4n_rainbow_table_file_name;
+};
+
+struct SubGhzProtocolEncoderAlutech_at_4n {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    Alutech_at_4nDecoderStepReset = 0,
+    Alutech_at_4nDecoderStepCheckPreambula,
+    Alutech_at_4nDecoderStepSaveDuration,
+    Alutech_at_4nDecoderStepCheckDuration,
+} Alutech_at_4nDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_alutech_at_4n_decoder = {
+    .alloc = subghz_protocol_decoder_alutech_at_4n_alloc,
+    .free = subghz_protocol_decoder_alutech_at_4n_free,
+
+    .feed = subghz_protocol_decoder_alutech_at_4n_feed,
+    .reset = subghz_protocol_decoder_alutech_at_4n_reset,
+
+    .get_hash_data = subghz_protocol_decoder_alutech_at_4n_get_hash_data,
+    .serialize = subghz_protocol_decoder_alutech_at_4n_serialize,
+    .deserialize = subghz_protocol_decoder_alutech_at_4n_deserialize,
+    .get_string = subghz_protocol_decoder_alutech_at_4n_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_alutech_at_4n_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol subghz_protocol_alutech_at_4n = {
+    .name = SUBGHZ_PROTOCOL_ALUTECH_AT_4N_NAME,
+    .type = SubGhzProtocolTypeDynamic,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
+
+    .decoder = &subghz_protocol_alutech_at_4n_decoder,
+    .encoder = &subghz_protocol_alutech_at_4n_encoder,
+};
+
+/**
+ * Read bytes from rainbow table
+ * @param file_name Full path to rainbow table the file
+ * @param number_alutech_at_4n_magic_data number in the array
+ * @return alutech_at_4n_magic_data
+ */
+static uint32_t subghz_protocol_alutech_at_4n_get_magic_data_in_file(
+    const char* file_name,
+    uint8_t number_alutech_at_4n_magic_data) {
+    if(!strcmp(file_name, "")) return SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE;
+
+    uint8_t buffer[sizeof(uint32_t)] = {0};
+    uint32_t address = number_alutech_at_4n_magic_data * sizeof(uint32_t);
+    uint32_t alutech_at_4n_magic_data = 0;
+
+    if(subghz_keystore_raw_get_data(file_name, address, buffer, sizeof(uint32_t))) {
+        for(size_t i = 0; i < sizeof(uint32_t); i++) {
+            alutech_at_4n_magic_data = (alutech_at_4n_magic_data << 8) | buffer[i];
+        }
+    } else {
+        alutech_at_4n_magic_data = SUBGHZ_NO_ALUTECH_AT_4N_RAINBOW_TABLE;
+    }
+    return alutech_at_4n_magic_data;
+}
+
+static uint8_t subghz_protocol_alutech_at_4n_crc(uint64_t data) {
+    uint8_t* p = (uint8_t*)&data;
+    uint8_t crc = 0xff;
+    for(uint8_t y = 0; y < 8; y++) {
+        crc = crc ^ p[y];
+        for(uint8_t i = 0; i < 8; i++) {
+            if((crc & 0x80) != 0) {
+                crc <<= 1;
+                crc ^= 0x31;
+            } else {
+                crc <<= 1;
+            }
+        }
+    }
+    return crc;
+}
+
+static uint8_t subghz_protocol_alutech_at_4n_decrypt_data_crc(uint8_t data) {
+    uint8_t crc = data;
+    for(uint8_t i = 0; i < 8; i++) {
+        if((crc & 0x80) != 0) {
+            crc <<= 1;
+            crc ^= 0x31;
+        } else {
+            crc <<= 1;
+        }
+    }
+    return ~crc;
+}
+
+static uint64_t subghz_protocol_alutech_at_4n_decrypt(uint64_t data, const char* file_name) {
+    uint8_t* p = (uint8_t*)&data;
+    uint32_t data1 = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+    uint32_t data2 = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
+    uint32_t data3 = 0;
+    uint32_t magic_data[] = {
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 0),
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 1),
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 2),
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 3),
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 4),
+        subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 5)};
+
+    uint32_t i = magic_data[0];
+    do {
+        data2 = data2 -
+                ((magic_data[1] + (data1 << 4)) ^ ((magic_data[2] + (data1 >> 5)) ^ (data1 + i)));
+        data3 = data2 + i;
+        i += magic_data[3];
+        data1 =
+            data1 - ((magic_data[4] + (data2 << 4)) ^ ((magic_data[5] + (data2 >> 5)) ^ data3));
+    } while(i != 0);
+
+    p[0] = (uint8_t)(data1 >> 24);
+    p[1] = (uint8_t)(data1 >> 16);
+    p[3] = (uint8_t)data1;
+    p[4] = (uint8_t)(data2 >> 24);
+    p[5] = (uint8_t)(data2 >> 16);
+    p[2] = (uint8_t)(data1 >> 8);
+    p[6] = (uint8_t)(data2 >> 8);
+    p[7] = (uint8_t)data2;
+
+    return data;
+}
+
+// static uint64_t subghz_protocol_alutech_at_4n_encrypt(uint64_t data, const char* file_name) {
+//     uint8_t* p = (uint8_t*)&data;
+//     uint32_t data1 = 0;
+//     uint32_t data2 = p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
+//     uint32_t data3 = p[4] << 24 | p[5] << 16 | p[6] << 8 | p[7];
+//     uint32_t magic_data[] = {
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 6),
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 4),
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 5),
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 1),
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 2),
+//         subghz_protocol_alutech_at_4n_get_magic_data_in_file(file_name, 0)};
+
+//     do {
+//         data1 = data1 + magic_data[0];
+//         data2 = data2 + ((magic_data[1] + (data3 << 4)) ^
+//                          ((magic_data[2] + (data3 >> 5)) ^ (data1 + data3)));
+//         data3 = data3 + ((magic_data[3] + (data2 << 4)) ^
+//                          ((magic_data[4] + (data2 >> 5)) ^ (data1 + data2)));
+//     } while(data1 != magic_data[5]);
+//     p[0] = (uint8_t)(data2 >> 24);
+//     p[1] = (uint8_t)(data2 >> 16);
+//     p[3] = (uint8_t)data2;
+//     p[4] = (uint8_t)(data3 >> 24);
+//     p[5] = (uint8_t)(data3 >> 16);
+//     p[2] = (uint8_t)(data2 >> 8);
+//     p[6] = (uint8_t)(data3 >> 8);
+//     p[7] = (uint8_t)data3;
+
+//     return data;
+// }
+
+void* subghz_protocol_decoder_alutech_at_4n_alloc(SubGhzEnvironment* environment) {
+    SubGhzProtocolDecoderAlutech_at_4n* instance =
+        malloc(sizeof(SubGhzProtocolDecoderAlutech_at_4n));
+    instance->base.protocol = &subghz_protocol_alutech_at_4n;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    instance->alutech_at_4n_rainbow_table_file_name =
+        subghz_environment_get_alutech_at_4n_rainbow_table_file_name(environment);
+    if(instance->alutech_at_4n_rainbow_table_file_name) {
+        FURI_LOG_I(
+            TAG, "Loading rainbow table from %s", instance->alutech_at_4n_rainbow_table_file_name);
+    }
+    return instance;
+}
+
+void subghz_protocol_decoder_alutech_at_4n_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    instance->alutech_at_4n_rainbow_table_file_name = NULL;
+    free(instance);
+}
+
+void subghz_protocol_decoder_alutech_at_4n_reset(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+}
+
+void subghz_protocol_decoder_alutech_at_4n_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case Alutech_at_4nDecoderStepReset:
+        if((level) && DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
+                          subghz_protocol_alutech_at_4n_const.te_delta) {
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepCheckPreambula;
+            instance->header_count++;
+        }
+        break;
+    case Alutech_at_4nDecoderStepCheckPreambula:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
+                        subghz_protocol_alutech_at_4n_const.te_delta)) {
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+            break;
+        }
+        if((instance->header_count > 2) &&
+           (DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short * 10) <
+            subghz_protocol_alutech_at_4n_const.te_delta * 10)) {
+            // Found header
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->data = 0;
+            instance->decoder.decode_count_bit = 0;
+        } else {
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+            instance->header_count = 0;
+        }
+        break;
+    case Alutech_at_4nDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepCheckDuration;
+        }
+        break;
+    case Alutech_at_4nDecoderStepCheckDuration:
+        if(!level) {
+            if(duration >= ((uint32_t)subghz_protocol_alutech_at_4n_const.te_short * 2 +
+                            subghz_protocol_alutech_at_4n_const.te_delta)) {
+                //add last bit
+                if(DURATION_DIFF(
+                       instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_short) <
+                   subghz_protocol_alutech_at_4n_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                } else if(
+                    DURATION_DIFF(
+                        instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_long) <
+                    subghz_protocol_alutech_at_4n_const.te_delta * 2) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                }
+
+                // Found end TX
+                instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+                if(instance->decoder.decode_count_bit ==
+                   subghz_protocol_alutech_at_4n_const.min_count_bit_for_found) {
+                    if(instance->generic.data != instance->data) {
+                        instance->generic.data = instance->data;
+
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                        instance->crc = instance->decoder.decode_data;
+
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                    instance->decoder.decode_data = 0;
+                    instance->data = 0;
+                    instance->decoder.decode_count_bit = 0;
+                    instance->header_count = 0;
+                }
+                break;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_short) <
+                 subghz_protocol_alutech_at_4n_const.te_delta) &&
+                (DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_long) <
+                 subghz_protocol_alutech_at_4n_const.te_delta * 2)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                if(instance->decoder.decode_count_bit == 64) {
+                    instance->data = instance->decoder.decode_data;
+                    instance->decoder.decode_data = 0;
+                }
+                instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_alutech_at_4n_const.te_long) <
+                 subghz_protocol_alutech_at_4n_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_alutech_at_4n_const.te_short) <
+                 subghz_protocol_alutech_at_4n_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                if(instance->decoder.decode_count_bit == 64) {
+                    instance->data = instance->decoder.decode_data;
+                    instance->decoder.decode_data = 0;
+                }
+                instance->decoder.parser_step = Alutech_at_4nDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+                instance->header_count = 0;
+            }
+        } else {
+            instance->decoder.parser_step = Alutech_at_4nDecoderStepReset;
+            instance->header_count = 0;
+        }
+        break;
+    }
+}
+
+/** 
+ * Analysis of received data
+ * @param instance Pointer to a SubGhzBlockGeneric* instance
+ * @param file_name Full path to rainbow table the file
+ */
+static void subghz_protocol_alutech_at_4n_remote_controller(
+    SubGhzBlockGeneric* instance,
+    uint8_t crc,
+    const char* file_name) {
+    /**
+ *  Message format 72bit LSB first
+ *           data        crc
+ *      XXXXXXXXXXXXXXXX  CC
+ *  
+ *  For analysis, you need to turn the package MSB
+ *  in decoded messages format
+ * 
+ *     crc1 serial  cnt  key
+ *      cc SSSSSSSS XXxx BB 
+ * 
+ *  crc1 is calculated from the lower part of cnt
+ *  key 1=0xff, 2=0x11, 3=0x22, 4=0x33, 5=0x44
+ * 
+ */
+
+    bool status = false;
+    uint64_t data = subghz_protocol_blocks_reverse_key(instance->data, 64);
+    crc = subghz_protocol_blocks_reverse_key(crc, 8);
+
+    if(crc == subghz_protocol_alutech_at_4n_crc(data)) {
+        data = subghz_protocol_alutech_at_4n_decrypt(data, file_name);
+        status = true;
+    }
+
+    if(status && ((uint8_t)(data >> 56) ==
+                  subghz_protocol_alutech_at_4n_decrypt_data_crc((uint8_t)((data >> 8) & 0xFF)))) {
+        instance->btn = (uint8_t)data & 0xFF;
+        instance->cnt = (uint16_t)(data >> 8) & 0xFFFF;
+        instance->serial = (uint32_t)(data >> 24) & 0xFFFFFFFF;
+    }
+
+    if(!status) {
+        instance->btn = 0;
+        instance->cnt = 0;
+        instance->serial = 0;
+    }
+}
+
+uint8_t subghz_protocol_decoder_alutech_at_4n_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    return (uint8_t)instance->crc;
+}
+
+bool subghz_protocol_decoder_alutech_at_4n_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    bool res = subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+    if(res && !flipper_format_write_uint32(flipper_format, "CRC", &instance->crc, 1)) {
+        FURI_LOG_E(TAG, "Unable to add CRC");
+        res = false;
+    }
+    return res;
+
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+bool subghz_protocol_decoder_alutech_at_4n_deserialize(
+    void* context,
+    FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    bool ret = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           subghz_protocol_alutech_at_4n_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        if(!flipper_format_rewind(flipper_format)) {
+            FURI_LOG_E(TAG, "Rewind error");
+            break;
+        }
+        if(!flipper_format_read_uint32(flipper_format, "CRC", (uint32_t*)&instance->crc, 1)) {
+            FURI_LOG_E(TAG, "Missing CRC");
+            break;
+        }
+        ret = true;
+    } while(false);
+    return ret;
+}
+
+void subghz_protocol_decoder_alutech_at_4n_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderAlutech_at_4n* instance = context;
+    subghz_protocol_alutech_at_4n_remote_controller(
+        &instance->generic, instance->crc, instance->alutech_at_4n_rainbow_table_file_name);
+    uint32_t code_found_hi = instance->generic.data >> 32;
+    uint32_t code_found_lo = instance->generic.data & 0x00000000ffffffff;
+
+    furi_string_cat_printf(
+        output,
+        "%s %d\r\n"
+        "Key:0x%08lX%08lX%02X\r\n"
+        "Sn:0x%08lX  Btn:0x%01X\r\n"
+        "Cnt:0x%03lX\r\n",
+
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        code_found_hi,
+        code_found_lo,
+        (uint8_t)instance->crc,
+        instance->generic.serial,
+        instance->generic.btn,
+        instance->generic.cnt);
+}
diff --git a/lib/subghz/protocols/alutech_at_4n.h b/lib/subghz/protocols/alutech_at_4n.h
new file mode 100644
index 000000000..38bac3ea6
--- /dev/null
+++ b/lib/subghz/protocols/alutech_at_4n.h
@@ -0,0 +1,74 @@
+#pragma once
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_ALUTECH_AT_4N_NAME "Alutech at-4n"
+
+typedef struct SubGhzProtocolDecoderAlutech_at_4n SubGhzProtocolDecoderAlutech_at_4n;
+typedef struct SubGhzProtocolEncoderAlutech_at_4n SubGhzProtocolEncoderAlutech_at_4n;
+
+extern const SubGhzProtocolDecoder subghz_protocol_alutech_at_4n_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_alutech_at_4n_encoder;
+extern const SubGhzProtocol subghz_protocol_alutech_at_4n;
+
+/**
+ * Allocate SubGhzProtocolDecoderAlutech_at_4n.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderAlutech_at_4n* pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ */
+void* subghz_protocol_decoder_alutech_at_4n_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderAlutech_at_4n.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ */
+void subghz_protocol_decoder_alutech_at_4n_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderAlutech_at_4n.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ */
+void subghz_protocol_decoder_alutech_at_4n_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_alutech_at_4n_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_alutech_at_4n_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderAlutech_at_4n.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_alutech_at_4n_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderAlutech_at_4n.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_alutech_at_4n_deserialize(
+    void* context,
+    FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderAlutech_at_4n instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_alutech_at_4n_get_string(void* context, FuriString* output);
diff --git a/lib/subghz/protocols/dooya.c b/lib/subghz/protocols/dooya.c
new file mode 100644
index 000000000..c70b6d54e
--- /dev/null
+++ b/lib/subghz/protocols/dooya.c
@@ -0,0 +1,447 @@
+#include "dooya.h"
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+#define TAG "SubGhzProtocolDooya"
+
+#define DOYA_SINGLE_CHANNEL 0xFF
+
+static const SubGhzBlockConst subghz_protocol_dooya_const = {
+    .te_short = 366,
+    .te_long = 733,
+    .te_delta = 120,
+    .min_count_bit_for_found = 40,
+};
+
+struct SubGhzProtocolDecoderDooya {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+};
+
+struct SubGhzProtocolEncoderDooya {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    DooyaDecoderStepReset = 0,
+    DooyaDecoderStepFoundStartBit,
+    DooyaDecoderStepSaveDuration,
+    DooyaDecoderStepCheckDuration,
+} DooyaDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_dooya_decoder = {
+    .alloc = subghz_protocol_decoder_dooya_alloc,
+    .free = subghz_protocol_decoder_dooya_free,
+
+    .feed = subghz_protocol_decoder_dooya_feed,
+    .reset = subghz_protocol_decoder_dooya_reset,
+
+    .get_hash_data = subghz_protocol_decoder_dooya_get_hash_data,
+    .serialize = subghz_protocol_decoder_dooya_serialize,
+    .deserialize = subghz_protocol_decoder_dooya_deserialize,
+    .get_string = subghz_protocol_decoder_dooya_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_dooya_encoder = {
+    .alloc = subghz_protocol_encoder_dooya_alloc,
+    .free = subghz_protocol_encoder_dooya_free,
+
+    .deserialize = subghz_protocol_encoder_dooya_deserialize,
+    .stop = subghz_protocol_encoder_dooya_stop,
+    .yield = subghz_protocol_encoder_dooya_yield,
+};
+
+const SubGhzProtocol subghz_protocol_dooya = {
+    .name = SUBGHZ_PROTOCOL_DOOYA_NAME,
+    .type = SubGhzProtocolTypeStatic,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM |
+            SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save |
+            SubGhzProtocolFlag_Send,
+
+    .decoder = &subghz_protocol_dooya_decoder,
+    .encoder = &subghz_protocol_dooya_encoder,
+};
+
+void* subghz_protocol_encoder_dooya_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolEncoderDooya* instance = malloc(sizeof(SubGhzProtocolEncoderDooya));
+
+    instance->base.protocol = &subghz_protocol_dooya;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    instance->encoder.repeat = 10;
+    instance->encoder.size_upload = 128;
+    instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
+    instance->encoder.is_running = false;
+    return instance;
+}
+
+void subghz_protocol_encoder_dooya_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolEncoderDooya* instance = context;
+    free(instance->encoder.upload);
+    free(instance);
+}
+
+/**
+ * Generating an upload from data.
+ * @param instance Pointer to a SubGhzProtocolEncoderDooya instance
+ * @return true On success
+ */
+static bool subghz_protocol_encoder_dooya_get_upload(SubGhzProtocolEncoderDooya* instance) {
+    furi_assert(instance);
+
+    size_t index = 0;
+    size_t size_upload = (instance->generic.data_count_bit * 2) + 2;
+    if(size_upload > instance->encoder.size_upload) {
+        FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer.");
+        return false;
+    } else {
+        instance->encoder.size_upload = size_upload;
+    }
+
+    //Send header
+    if(bit_read(instance->generic.data, 0)) {
+        instance->encoder.upload[index++] = level_duration_make(
+            false,
+            (uint32_t)subghz_protocol_dooya_const.te_long * 12 +
+                subghz_protocol_dooya_const.te_long);
+    } else {
+        instance->encoder.upload[index++] = level_duration_make(
+            false,
+            (uint32_t)subghz_protocol_dooya_const.te_long * 12 +
+                subghz_protocol_dooya_const.te_short);
+    }
+
+    //Send start bit
+    instance->encoder.upload[index++] =
+        level_duration_make(true, (uint32_t)subghz_protocol_dooya_const.te_short * 13);
+    instance->encoder.upload[index++] =
+        level_duration_make(false, (uint32_t)subghz_protocol_dooya_const.te_long * 2);
+
+    //Send key data
+    for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
+        if(bit_read(instance->generic.data, i - 1)) {
+            //send bit 1
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_dooya_const.te_long);
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_dooya_const.te_short);
+        } else {
+            //send bit 0
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_dooya_const.te_short);
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_dooya_const.te_long);
+        }
+    }
+    return true;
+}
+
+bool subghz_protocol_encoder_dooya_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolEncoderDooya* instance = context;
+    bool res = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            FURI_LOG_E(TAG, "Deserialize error");
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           subghz_protocol_dooya_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        //optional parameter parameter
+        flipper_format_read_uint32(
+            flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
+
+        if(!subghz_protocol_encoder_dooya_get_upload(instance)) break;
+        instance->encoder.is_running = true;
+
+        res = true;
+    } while(false);
+
+    return res;
+}
+
+void subghz_protocol_encoder_dooya_stop(void* context) {
+    SubGhzProtocolEncoderDooya* instance = context;
+    instance->encoder.is_running = false;
+}
+
+LevelDuration subghz_protocol_encoder_dooya_yield(void* context) {
+    SubGhzProtocolEncoderDooya* instance = context;
+
+    if(instance->encoder.repeat == 0 || !instance->encoder.is_running) {
+        instance->encoder.is_running = false;
+        return level_duration_reset();
+    }
+
+    LevelDuration ret = instance->encoder.upload[instance->encoder.front];
+
+    if(++instance->encoder.front == instance->encoder.size_upload) {
+        instance->encoder.repeat--;
+        instance->encoder.front = 0;
+    }
+
+    return ret;
+}
+
+void* subghz_protocol_decoder_dooya_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderDooya* instance = malloc(sizeof(SubGhzProtocolDecoderDooya));
+    instance->base.protocol = &subghz_protocol_dooya;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void subghz_protocol_decoder_dooya_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_dooya_reset(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+    instance->decoder.parser_step = DooyaDecoderStepReset;
+}
+
+void subghz_protocol_decoder_dooya_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case DooyaDecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_dooya_const.te_long * 12) <
+                        subghz_protocol_dooya_const.te_delta * 20)) {
+            instance->decoder.parser_step = DooyaDecoderStepFoundStartBit;
+        }
+        break;
+
+    case DooyaDecoderStepFoundStartBit:
+        if(!level) {
+            if(DURATION_DIFF(duration, subghz_protocol_dooya_const.te_long * 2) <
+               subghz_protocol_dooya_const.te_delta * 3) {
+                instance->decoder.parser_step = DooyaDecoderStepSaveDuration;
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+            } else {
+                instance->decoder.parser_step = DooyaDecoderStepReset;
+            }
+        } else if(
+            DURATION_DIFF(duration, subghz_protocol_dooya_const.te_short * 13) <
+            subghz_protocol_dooya_const.te_delta * 5) {
+            break;
+        } else {
+            instance->decoder.parser_step = DooyaDecoderStepReset;
+        }
+        break;
+
+    case DooyaDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = DooyaDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = DooyaDecoderStepReset;
+        }
+        break;
+
+    case DooyaDecoderStepCheckDuration:
+        if(!level) {
+            if(duration >= (subghz_protocol_dooya_const.te_long * 4)) {
+                //add last bit
+                if(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_dooya_const.te_short) <
+                   subghz_protocol_dooya_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                } else if(
+                    DURATION_DIFF(instance->decoder.te_last, subghz_protocol_dooya_const.te_long) <
+                    subghz_protocol_dooya_const.te_delta * 2) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                } else {
+                    instance->decoder.parser_step = DooyaDecoderStepReset;
+                    break;
+                }
+                instance->decoder.parser_step = DooyaDecoderStepFoundStartBit;
+                if(instance->decoder.decode_count_bit ==
+                   subghz_protocol_dooya_const.min_count_bit_for_found) {
+                    instance->generic.data = instance->decoder.decode_data;
+                    instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                    if(instance->base.callback)
+                        instance->base.callback(&instance->base, instance->base.context);
+                }
+                break;
+            } else if(
+                (DURATION_DIFF(instance->decoder.te_last, subghz_protocol_dooya_const.te_short) <
+                 subghz_protocol_dooya_const.te_delta) &&
+                (DURATION_DIFF(duration, subghz_protocol_dooya_const.te_long) <
+                 subghz_protocol_dooya_const.te_delta * 2)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                instance->decoder.parser_step = DooyaDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(instance->decoder.te_last, subghz_protocol_dooya_const.te_long) <
+                 subghz_protocol_dooya_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_dooya_const.te_short) <
+                 subghz_protocol_dooya_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                instance->decoder.parser_step = DooyaDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = DooyaDecoderStepReset;
+            }
+        } else {
+            instance->decoder.parser_step = DooyaDecoderStepReset;
+        }
+        break;
+    }
+}
+
+/** 
+ * Analysis of received data
+ * @param instance Pointer to a SubGhzBlockGeneric* instance
+ */
+static void subghz_protocol_somfy_telis_check_remote_controller(SubGhzBlockGeneric* instance) {
+    /*
+ * 																serial       s/m  ch      key   	
+ * long press down   X * E1DC030533, 40b 			111000011101110000000011 0000 0101 0011 0011
+ * 
+ * short press down  3 * E1DC030533, 40b			111000011101110000000011 0000 0101 0011 0011
+ *                   3 * E1DC03053C, 40b 	        111000011101110000000011 0000 0101 0011 1100
+ * 	
+ * press stop        X * E1DC030555, 40b			111000011101110000000011 0000 0101 0101 0101
+ * 
+ * long press up     X * E1DC030511, 40b			111000011101110000000011 0000 0101 0001 0001
+ * 
+ * short press up    3 * E1DC030511, 40b			111000011101110000000011 0000 0101 0001 0001
+ *                   3 * E1DC03051E, 40b		    111000011101110000000011 0000 0101 0001 1110
+ *
+ * serial: 3 byte serial number
+ * s/m: single (b0000) / multi (b0001) channel console  
+ * ch: channel if single (always b0101) or multi 
+ * key: 0b00010001 - long press up
+ *      0b00011110 - short press up
+ *      0b00110011 - long press down
+ *      0b00111100 - short press down
+ *      0b01010101 - press stop 
+ *      0b01111001 - press up + down
+ *      0b10000000 - press up + stop
+ *      0b10000001 - press down + stop
+ *      0b11001100 - press P2
+ *      
+*/
+
+    instance->serial = (instance->data >> 16);
+    if((instance->data >> 12) & 0x0F) {
+        instance->cnt = (instance->data >> 8) & 0x0F;
+    } else {
+        instance->cnt = DOYA_SINGLE_CHANNEL;
+    }
+    instance->btn = instance->data & 0xFF;
+}
+
+uint8_t subghz_protocol_decoder_dooya_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool subghz_protocol_decoder_dooya_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+bool subghz_protocol_decoder_dooya_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+    bool ret = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           subghz_protocol_dooya_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        ret = true;
+    } while(false);
+    return ret;
+}
+
+/**
+ * Get button name.
+ * @param btn Button number, 8 bit
+ */
+static const char* subghz_protocol_dooya_get_name_button(uint8_t btn) {
+    const char* btn_name;
+    switch(btn) {
+    case 0b00010001:
+        btn_name = "Up_Long";
+        break;
+    case 0b00011110:
+        btn_name = "Up_Short";
+        break;
+    case 0b00110011:
+        btn_name = "Down_Long";
+        break;
+    case 0b00111100:
+        btn_name = "Down_Short";
+        break;
+    case 0b01010101:
+        btn_name = "Stop";
+        break;
+    case 0b01111001:
+        btn_name = "Up+Down";
+        break;
+    case 0b10000000:
+        btn_name = "Up+Stop";
+        break;
+    case 0b10000001:
+        btn_name = "Down+Stop";
+        break;
+    case 0b11001100:
+        btn_name = "P2";
+        break;
+    default:
+        btn_name = "Unknown";
+        break;
+    }
+    return btn_name;
+}
+
+void subghz_protocol_decoder_dooya_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderDooya* instance = context;
+
+    subghz_protocol_somfy_telis_check_remote_controller(&instance->generic);
+
+    furi_string_cat_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%010llX\r\n"
+        "Sn:0x%08lX\r\n"
+        "Btn:%s\r\n",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        instance->generic.data,
+        instance->generic.serial,
+        subghz_protocol_dooya_get_name_button(instance->generic.btn));
+    if(instance->generic.cnt == DOYA_SINGLE_CHANNEL) {
+        furi_string_cat_printf(output, "Ch:Single\r\n");
+    } else {
+        furi_string_cat_printf(output, "Ch:%lu\r\n", instance->generic.cnt);
+    }
+}
diff --git a/lib/subghz/protocols/dooya.h b/lib/subghz/protocols/dooya.h
new file mode 100644
index 000000000..f0cf843c0
--- /dev/null
+++ b/lib/subghz/protocols/dooya.h
@@ -0,0 +1,107 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_DOOYA_NAME "Dooya"
+
+typedef struct SubGhzProtocolDecoderDooya SubGhzProtocolDecoderDooya;
+typedef struct SubGhzProtocolEncoderDooya SubGhzProtocolEncoderDooya;
+
+extern const SubGhzProtocolDecoder subghz_protocol_dooya_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_dooya_encoder;
+extern const SubGhzProtocol subghz_protocol_dooya;
+
+/**
+ * Allocate SubGhzProtocolEncoderDooya.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderDooya* pointer to a SubGhzProtocolEncoderDooya instance
+ */
+void* subghz_protocol_encoder_dooya_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderDooya.
+ * @param context Pointer to a SubGhzProtocolEncoderDooya instance
+ */
+void subghz_protocol_encoder_dooya_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderDooya instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_dooya_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderDooya instance
+ */
+void subghz_protocol_encoder_dooya_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderDooya instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_dooya_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderDooya.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderDooya* pointer to a SubGhzProtocolDecoderDooya instance
+ */
+void* subghz_protocol_decoder_dooya_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderDooya.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ */
+void subghz_protocol_decoder_dooya_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderDooya.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ */
+void subghz_protocol_decoder_dooya_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_dooya_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_dooya_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderDooya.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_dooya_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderDooya.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_dooya_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderDooya instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_dooya_get_string(void* context, FuriString* output);
diff --git a/lib/subghz/protocols/keeloq.c b/lib/subghz/protocols/keeloq.c
index aaf573a57..a0970de4d 100644
--- a/lib/subghz/protocols/keeloq.c
+++ b/lib/subghz/protocols/keeloq.c
@@ -520,11 +520,14 @@ void subghz_protocol_decoder_keeloq_feed(void* context, bool level, uint32_t dur
                             subghz_protocol_keeloq_const.te_delta)) {
                 // Found end TX
                 instance->decoder.parser_step = KeeloqDecoderStepReset;
-                if(instance->decoder.decode_count_bit >=
-                   subghz_protocol_keeloq_const.min_count_bit_for_found) {
+                if((instance->decoder.decode_count_bit >=
+                    subghz_protocol_keeloq_const.min_count_bit_for_found) &&
+                   (instance->decoder.decode_count_bit <=
+                    subghz_protocol_keeloq_const.min_count_bit_for_found + 2)) {
                     if(instance->generic.data != instance->decoder.decode_data) {
                         instance->generic.data = instance->decoder.decode_data;
-                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                        instance->generic.data_count_bit =
+                            subghz_protocol_keeloq_const.min_count_bit_for_found;
                         if(instance->base.callback)
                             instance->base.callback(&instance->base, instance->base.context);
                     }
@@ -541,6 +544,8 @@ void subghz_protocol_decoder_keeloq_feed(void* context, bool level, uint32_t dur
                 if(instance->decoder.decode_count_bit <
                    subghz_protocol_keeloq_const.min_count_bit_for_found) {
                     subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                } else {
+                    instance->decoder.decode_count_bit++;
                 }
                 instance->decoder.parser_step = KeeloqDecoderStepSaveDuration;
             } else if(
@@ -551,6 +556,8 @@ void subghz_protocol_decoder_keeloq_feed(void* context, bool level, uint32_t dur
                 if(instance->decoder.decode_count_bit <
                    subghz_protocol_keeloq_const.min_count_bit_for_found) {
                     subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                } else {
+                    instance->decoder.decode_count_bit++;
                 }
                 instance->decoder.parser_step = KeeloqDecoderStepSaveDuration;
             } else {
diff --git a/lib/subghz/protocols/linear_delta3.c b/lib/subghz/protocols/linear_delta3.c
new file mode 100644
index 000000000..869edac84
--- /dev/null
+++ b/lib/subghz/protocols/linear_delta3.c
@@ -0,0 +1,359 @@
+#include "linear_delta3.h"
+
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+#define TAG "SubGhzProtocolLinearDelta3"
+
+#define DIP_PATTERN "%c%c%c%c%c%c%c%c"
+#define DATA_TO_DIP(dip)                                                                    \
+    (dip & 0x0080 ? '1' : '0'), (dip & 0x0040 ? '1' : '0'), (dip & 0x0020 ? '1' : '0'),     \
+        (dip & 0x0010 ? '1' : '0'), (dip & 0x0008 ? '1' : '0'), (dip & 0x0004 ? '1' : '0'), \
+        (dip & 0x0002 ? '1' : '0'), (dip & 0x0001 ? '1' : '0')
+
+static const SubGhzBlockConst subghz_protocol_linear_delta3_const = {
+    .te_short = 500,
+    .te_long = 2000,
+    .te_delta = 150,
+    .min_count_bit_for_found = 8,
+};
+
+struct SubGhzProtocolDecoderLinearDelta3 {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+
+    uint32_t last_data;
+};
+
+struct SubGhzProtocolEncoderLinearDelta3 {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    LinearDecoderStepReset = 0,
+    LinearDecoderStepSaveDuration,
+    LinearDecoderStepCheckDuration,
+} LinearDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_linear_delta3_decoder = {
+    .alloc = subghz_protocol_decoder_linear_delta3_alloc,
+    .free = subghz_protocol_decoder_linear_delta3_free,
+
+    .feed = subghz_protocol_decoder_linear_delta3_feed,
+    .reset = subghz_protocol_decoder_linear_delta3_reset,
+
+    .get_hash_data = subghz_protocol_decoder_linear_delta3_get_hash_data,
+    .serialize = subghz_protocol_decoder_linear_delta3_serialize,
+    .deserialize = subghz_protocol_decoder_linear_delta3_deserialize,
+    .get_string = subghz_protocol_decoder_linear_delta3_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_linear_delta3_encoder = {
+    .alloc = subghz_protocol_encoder_linear_delta3_alloc,
+    .free = subghz_protocol_encoder_linear_delta3_free,
+
+    .deserialize = subghz_protocol_encoder_linear_delta3_deserialize,
+    .stop = subghz_protocol_encoder_linear_delta3_stop,
+    .yield = subghz_protocol_encoder_linear_delta3_yield,
+};
+
+const SubGhzProtocol subghz_protocol_linear_delta3 = {
+    .name = SUBGHZ_PROTOCOL_LINEAR_DELTA3_NAME,
+    .type = SubGhzProtocolTypeStatic,
+    .flag = SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable |
+            SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
+
+    .decoder = &subghz_protocol_linear_delta3_decoder,
+    .encoder = &subghz_protocol_linear_delta3_encoder,
+};
+
+void* subghz_protocol_encoder_linear_delta3_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolEncoderLinearDelta3* instance =
+        malloc(sizeof(SubGhzProtocolEncoderLinearDelta3));
+
+    instance->base.protocol = &subghz_protocol_linear_delta3;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    instance->encoder.repeat = 10;
+    instance->encoder.size_upload = 16;
+    instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
+    instance->encoder.is_running = false;
+    return instance;
+}
+
+void subghz_protocol_encoder_linear_delta3_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolEncoderLinearDelta3* instance = context;
+    free(instance->encoder.upload);
+    free(instance);
+}
+
+/**
+ * Generating an upload from data.
+ * @param instance Pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ * @return true On success
+ */
+static bool
+    subghz_protocol_encoder_linear_delta3_get_upload(SubGhzProtocolEncoderLinearDelta3* instance) {
+    furi_assert(instance);
+    size_t index = 0;
+    size_t size_upload = (instance->generic.data_count_bit * 2);
+    if(size_upload > instance->encoder.size_upload) {
+        FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer.");
+        return false;
+    } else {
+        instance->encoder.size_upload = size_upload;
+    }
+
+    //Send key data
+    for(uint8_t i = instance->generic.data_count_bit; i > 1; i--) {
+        if(bit_read(instance->generic.data, i - 1)) {
+            //send bit 1
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_linear_delta3_const.te_short);
+            instance->encoder.upload[index++] = level_duration_make(
+                false, (uint32_t)subghz_protocol_linear_delta3_const.te_short * 7);
+        } else {
+            //send bit 0
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_linear_delta3_const.te_long);
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_linear_delta3_const.te_long);
+        }
+    }
+    //Send end bit
+    if(bit_read(instance->generic.data, 0)) {
+        //send bit 1
+        instance->encoder.upload[index++] =
+            level_duration_make(true, (uint32_t)subghz_protocol_linear_delta3_const.te_short);
+        //Send PT_GUARD
+        instance->encoder.upload[index] = level_duration_make(
+            false, (uint32_t)subghz_protocol_linear_delta3_const.te_short * 73);
+    } else {
+        //send bit 0
+        instance->encoder.upload[index++] =
+            level_duration_make(true, (uint32_t)subghz_protocol_linear_delta3_const.te_long);
+        //Send PT_GUARD
+        instance->encoder.upload[index] = level_duration_make(
+            false, (uint32_t)subghz_protocol_linear_delta3_const.te_short * 70);
+    }
+
+    return true;
+}
+
+bool subghz_protocol_encoder_linear_delta3_deserialize(
+    void* context,
+    FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolEncoderLinearDelta3* instance = context;
+    bool res = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            FURI_LOG_E(TAG, "Deserialize error");
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           subghz_protocol_linear_delta3_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        //optional parameter parameter
+        flipper_format_read_uint32(
+            flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
+
+        if(!subghz_protocol_encoder_linear_delta3_get_upload(instance)) break;
+        instance->encoder.is_running = true;
+
+        res = true;
+    } while(false);
+
+    return res;
+}
+
+void subghz_protocol_encoder_linear_delta3_stop(void* context) {
+    SubGhzProtocolEncoderLinearDelta3* instance = context;
+    instance->encoder.is_running = false;
+}
+
+LevelDuration subghz_protocol_encoder_linear_delta3_yield(void* context) {
+    SubGhzProtocolEncoderLinearDelta3* instance = context;
+
+    if(instance->encoder.repeat == 0 || !instance->encoder.is_running) {
+        instance->encoder.is_running = false;
+        return level_duration_reset();
+    }
+
+    LevelDuration ret = instance->encoder.upload[instance->encoder.front];
+
+    if(++instance->encoder.front == instance->encoder.size_upload) {
+        instance->encoder.repeat--;
+        instance->encoder.front = 0;
+    }
+
+    return ret;
+}
+
+void* subghz_protocol_decoder_linear_delta3_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderLinearDelta3* instance =
+        malloc(sizeof(SubGhzProtocolDecoderLinearDelta3));
+    instance->base.protocol = &subghz_protocol_linear_delta3;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void subghz_protocol_decoder_linear_delta3_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_linear_delta3_reset(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    instance->decoder.parser_step = LinearDecoderStepReset;
+    instance->last_data = 0;
+}
+
+void subghz_protocol_decoder_linear_delta3_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    switch(instance->decoder.parser_step) {
+    case LinearDecoderStepReset:
+        if((!level) &&
+           (DURATION_DIFF(duration, subghz_protocol_linear_delta3_const.te_short * 70) <
+            subghz_protocol_linear_delta3_const.te_delta * 24)) {
+            //Found header Linear
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+            instance->decoder.parser_step = LinearDecoderStepSaveDuration;
+        }
+        break;
+    case LinearDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = LinearDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = LinearDecoderStepReset;
+        }
+        break;
+    case LinearDecoderStepCheckDuration:
+        if(!level) {
+            if(duration >= (subghz_protocol_linear_delta3_const.te_short * 10)) {
+                instance->decoder.parser_step = LinearDecoderStepReset;
+                if(DURATION_DIFF(
+                       instance->decoder.te_last, subghz_protocol_linear_delta3_const.te_short) <
+                   subghz_protocol_linear_delta3_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                } else if(
+                    DURATION_DIFF(
+                        instance->decoder.te_last, subghz_protocol_linear_delta3_const.te_long) <
+                    subghz_protocol_linear_delta3_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                }
+                if(instance->decoder.decode_count_bit ==
+                   subghz_protocol_linear_delta3_const.min_count_bit_for_found) {
+                    if((instance->last_data == instance->decoder.decode_data) &&
+                       instance->last_data) {
+                        instance->generic.serial = 0x0;
+                        instance->generic.btn = 0x0;
+
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                    instance->decoder.parser_step = LinearDecoderStepSaveDuration;
+                    instance->last_data = instance->decoder.decode_data;
+                }
+                break;
+            }
+
+            if((DURATION_DIFF(
+                    instance->decoder.te_last, subghz_protocol_linear_delta3_const.te_short) <
+                subghz_protocol_linear_delta3_const.te_delta) &&
+               (DURATION_DIFF(duration, subghz_protocol_linear_delta3_const.te_short * 7) <
+                subghz_protocol_linear_delta3_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                instance->decoder.parser_step = LinearDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_linear_delta3_const.te_long) <
+                 subghz_protocol_linear_delta3_const.te_delta) &&
+                (DURATION_DIFF(duration, subghz_protocol_linear_delta3_const.te_long) <
+                 subghz_protocol_linear_delta3_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                instance->decoder.parser_step = LinearDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = LinearDecoderStepReset;
+            }
+
+        } else {
+            instance->decoder.parser_step = LinearDecoderStepReset;
+        }
+        break;
+    }
+}
+
+uint8_t subghz_protocol_decoder_linear_delta3_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8));
+}
+
+bool subghz_protocol_decoder_linear_delta3_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+bool subghz_protocol_decoder_linear_delta3_deserialize(
+    void* context,
+    FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+    bool ret = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           subghz_protocol_linear_delta3_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        ret = true;
+    } while(false);
+    return ret;
+}
+
+void subghz_protocol_decoder_linear_delta3_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderLinearDelta3* instance = context;
+
+    uint32_t data = instance->generic.data & 0xFF;
+
+    furi_string_cat_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%lX\r\n"
+        "DIP:" DIP_PATTERN "\r\n",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        data,
+        DATA_TO_DIP(data));
+}
diff --git a/lib/subghz/protocols/linear_delta3.h b/lib/subghz/protocols/linear_delta3.h
new file mode 100644
index 000000000..2f0a32e68
--- /dev/null
+++ b/lib/subghz/protocols/linear_delta3.h
@@ -0,0 +1,111 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_LINEAR_DELTA3_NAME "LinearDelta3"
+
+typedef struct SubGhzProtocolDecoderLinearDelta3 SubGhzProtocolDecoderLinearDelta3;
+typedef struct SubGhzProtocolEncoderLinearDelta3 SubGhzProtocolEncoderLinearDelta3;
+
+extern const SubGhzProtocolDecoder subghz_protocol_linear_delta3_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_linear_delta3_encoder;
+extern const SubGhzProtocol subghz_protocol_linear_delta3;
+
+/**
+ * Allocate SubGhzProtocolEncoderLinearDelta3.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderLinearDelta3* pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ */
+void* subghz_protocol_encoder_linear_delta3_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderLinearDelta3.
+ * @param context Pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ */
+void subghz_protocol_encoder_linear_delta3_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_linear_delta3_deserialize(
+    void* context,
+    FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ */
+void subghz_protocol_encoder_linear_delta3_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderLinearDelta3 instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_linear_delta3_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderLinearDelta3.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderLinearDelta3* pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ */
+void* subghz_protocol_decoder_linear_delta3_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderLinearDelta3.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ */
+void subghz_protocol_decoder_linear_delta3_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderLinearDelta3.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ */
+void subghz_protocol_decoder_linear_delta3_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_linear_delta3_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_linear_delta3_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderLinearDelta3.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_linear_delta3_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderLinearDelta3.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_linear_delta3_deserialize(
+    void* context,
+    FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderLinearDelta3 instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_linear_delta3_get_string(void* context, FuriString* output);
diff --git a/lib/subghz/protocols/protocol_items.c b/lib/subghz/protocols/protocol_items.c
index 2022e9c47..3904c1811 100644
--- a/lib/subghz/protocols/protocol_items.c
+++ b/lib/subghz/protocols/protocol_items.c
@@ -1,21 +1,48 @@
 #include "protocol_items.h"
 
 const SubGhzProtocol* subghz_protocol_registry_items[] = {
-    &subghz_protocol_gate_tx,       &subghz_protocol_keeloq,      &subghz_protocol_star_line,
-    &subghz_protocol_nice_flo,      &subghz_protocol_came,        &subghz_protocol_faac_slh,
-    &subghz_protocol_nice_flor_s,   &subghz_protocol_came_twee,   &subghz_protocol_came_atomo,
-    &subghz_protocol_nero_sketch,   &subghz_protocol_ido,         &subghz_protocol_kia,
-    &subghz_protocol_hormann,       &subghz_protocol_nero_radio,  &subghz_protocol_somfy_telis,
-    &subghz_protocol_somfy_keytis,  &subghz_protocol_scher_khan,  &subghz_protocol_princeton,
-    &subghz_protocol_raw,           &subghz_protocol_linear,      &subghz_protocol_secplus_v2,
-    &subghz_protocol_secplus_v1,    &subghz_protocol_megacode,    &subghz_protocol_holtek,
-    &subghz_protocol_chamb_code,    &subghz_protocol_power_smart, &subghz_protocol_marantec,
-    &subghz_protocol_bett,          &subghz_protocol_doitrand,    &subghz_protocol_phoenix_v2,
-    &subghz_protocol_honeywell_wdb, &subghz_protocol_magellan,    &subghz_protocol_intertechno_v3,
-    &subghz_protocol_clemsa,        &subghz_protocol_ansonic,     &subghz_protocol_smc5326,
+    &subghz_protocol_gate_tx,
+    &subghz_protocol_keeloq,
+    &subghz_protocol_star_line,
+    &subghz_protocol_nice_flo,
+    &subghz_protocol_came,
+    &subghz_protocol_faac_slh,
+    &subghz_protocol_nice_flor_s,
+    &subghz_protocol_came_twee,
+    &subghz_protocol_came_atomo,
+    &subghz_protocol_nero_sketch,
+    &subghz_protocol_ido,
+    &subghz_protocol_kia,
+    &subghz_protocol_hormann,
+    &subghz_protocol_nero_radio,
+    &subghz_protocol_somfy_telis,
+    &subghz_protocol_somfy_keytis,
+    &subghz_protocol_scher_khan,
+    &subghz_protocol_princeton,
+    &subghz_protocol_raw,
+    &subghz_protocol_linear,
+    &subghz_protocol_secplus_v2,
+    &subghz_protocol_secplus_v1,
+    &subghz_protocol_megacode,
+    &subghz_protocol_holtek,
+    &subghz_protocol_chamb_code,
+    &subghz_protocol_power_smart,
+    &subghz_protocol_marantec,
+    &subghz_protocol_bett,
+    &subghz_protocol_doitrand,
+    &subghz_protocol_phoenix_v2,
+    &subghz_protocol_honeywell_wdb,
+    &subghz_protocol_magellan,
+    &subghz_protocol_intertechno_v3,
+    &subghz_protocol_clemsa,
+    &subghz_protocol_ansonic,
+    &subghz_protocol_smc5326,
     &subghz_protocol_holtek_th12x,
+    &subghz_protocol_linear_delta3,
+    &subghz_protocol_dooya,
+    &subghz_protocol_alutech_at_4n,
 };
 
 const SubGhzProtocolRegistry subghz_protocol_registry = {
     .items = subghz_protocol_registry_items,
-    .size = COUNT_OF(subghz_protocol_registry_items)};
\ No newline at end of file
+    .size = COUNT_OF(subghz_protocol_registry_items)};
diff --git a/lib/subghz/protocols/protocol_items.h b/lib/subghz/protocols/protocol_items.h
index 669647e52..b4d01f8fe 100644
--- a/lib/subghz/protocols/protocol_items.h
+++ b/lib/subghz/protocols/protocol_items.h
@@ -21,6 +21,7 @@
 #include "gate_tx.h"
 #include "raw.h"
 #include "linear.h"
+#include "linear_delta3.h"
 #include "secplus_v2.h"
 #include "secplus_v1.h"
 #include "megacode.h"
@@ -38,6 +39,8 @@
 #include "ansonic.h"
 #include "smc5326.h"
 #include "holtek_ht12x.h"
+#include "dooya.h"
+#include "alutech_at_4n.h"
 
 #ifdef __cplusplus
 extern "C" {