diff --git a/display_dongle.h b/display_dongle.h
new file mode 100644
index 0000000..c5cb1a2
--- /dev/null
+++ b/display_dongle.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef USE_T_DONGLE_DISPLAY
+
+void dongleDisplayInit();
+void dongleDisplayShowIdle(uint8_t ch, int detCount);
+void dongleDisplayShowAlert(const char* method, const char* mac, int8_t rssi,
+                            uint8_t ch, unsigned long alertMs);
+void dongleDisplayTick(unsigned long now, uint8_t ch, int detCount);
+bool dongleDisplayInAlert(unsigned long now);
+
+#else
+
+static inline void dongleDisplayInit() {}
+static inline void dongleDisplayShowIdle(uint8_t, int) {}
+static inline void dongleDisplayShowAlert(const char*, const char*, int8_t, uint8_t,
+                                          unsigned long) {}
+static inline void dongleDisplayTick(unsigned long, uint8_t, int) {}
+static inline bool dongleDisplayInAlert(unsigned long) { return false; }
+
+#endif