diff --git a/radio/src/dataconstants.h b/radio/src/dataconstants.h
index 4f8013582..2345cdb3a 100644
--- a/radio/src/dataconstants.h
+++ b/radio/src/dataconstants.h
@@ -552,6 +552,8 @@ enum SwitchSources {
   SWSRC_FIRST_SENSOR,
   SWSRC_LAST_SENSOR = SWSRC_FIRST_SENSOR+MAX_TELEMETRY_SENSORS-1,
 
+  SWSRC_RADIO_ACTIVITY,
+
 #if defined(DEBUG_LATENCY)
   SWSRC_LATENCY_TOGGLE,
 #endif
diff --git a/radio/src/strhelpers.cpp b/radio/src/strhelpers.cpp
index 591723571..a3290ddcd 100644
--- a/radio/src/strhelpers.cpp
+++ b/radio/src/strhelpers.cpp
@@ -326,6 +326,9 @@ char * getSwitchString(char * dest, swsrc_t idx)
   else if (idx == SWSRC_TELEMETRY_STREAMING) {
     strcpy(s, "Tele");
   }
+  else if (idx == SWSRC_RADIO_ACTIVITY) {
+    strcpy(s, "Act");
+  }
 #if defined(DEBUG_LATENCY)
   else if (idx == SWSRC_LATENCY_TOGGLE) {
     strcpy(s, "Ltc");
diff --git a/radio/src/switches.cpp b/radio/src/switches.cpp
index 642dd704b..b24999227 100644
--- a/radio/src/switches.cpp
+++ b/radio/src/switches.cpp
@@ -455,6 +455,9 @@ bool getSwitch(swsrc_t swtch, uint8_t flags)
     idx = (CONVERT_MODE_TRIMS(idx/2) << 1) + (idx & 1);
     result = trimDown(idx);
   }
+  else if (cs_idx == SWSRC_RADIO_ACTIVITY) {
+    result = (inactivity.counter < 2);
+  }
   else if (cs_idx >= SWSRC_FIRST_SENSOR) {
     result = !telemetryItems[cs_idx-SWSRC_FIRST_SENSOR].isOld();
   }