diff --git a/Firmware/src/secconfig.h b/Firmware/src/secconfig.h
index 01f7e1c..7cd8dde 100644
--- a/Firmware/src/secconfig.h
+++ b/Firmware/src/secconfig.h
@@ -6,6 +6,7 @@
      #define RF_RFM69 - HopeRF RFM69(H)(C)W Module
    
    * Supported Sensors
+     #define HAS_NO_SENSOR - No Sensor, just send Battery Voltage (Beacon Mode)
      #define HAS_SHT21  - Sensirion SHT21 Temperature + Humidity Sensor
      #define HAS_BME280 - Bosch BME280 Temperature + Humidity + Pressure Sensor