diff --git a/companion/src/eeprominterface.cpp b/companion/src/eeprominterface.cpp
index 18379d773..88c6f803d 100644
--- a/companion/src/eeprominterface.cpp
+++ b/companion/src/eeprominterface.cpp
@@ -615,6 +615,8 @@ QString FuncSwData::funcToString()
     return QObject::tr("Play Haptic");
   else if (func == FuncReset)
     return QObject::tr("Reset");
+  else if (func == FuncSetTimer)
+    return QObject::tr("Set Timer");
   else if (func == FuncVario)
     return QObject::tr("Vario");
   else if (func == FuncPlayPrompt)
diff --git a/companion/src/eeprominterface.h b/companion/src/eeprominterface.h
index 8f78c2d71..d84f018f0 100644
--- a/companion/src/eeprominterface.h
+++ b/companion/src/eeprominterface.h
@@ -642,6 +642,7 @@ enum AssignFunc {
   FuncPlaySound,
   FuncPlayHaptic,
   FuncReset,
+  FuncSetTimer,
   FuncVario,
   FuncPlayPrompt,
   FuncPlayBoth,
diff --git a/companion/src/firmwares/opentx/opentxeeprom.cpp b/companion/src/firmwares/opentx/opentxeeprom.cpp
index e0365487b..bb56d1d15 100644
--- a/companion/src/firmwares/opentx/opentxeeprom.cpp
+++ b/companion/src/firmwares/opentx/opentxeeprom.cpp
@@ -1307,6 +1307,8 @@ class CustomFunctionsConversionTable: public ConversionTable {
       addConversion(FuncInstantTrim, val++);
       if (version >= 216) {
         addConversion(FuncReset, val++);
+        if (IS_ARM(board))
+          addConversion(FuncSetTimer, val++);
         for (int i=0; i<MAX_GVARS(board, version); i++)
           addConversion(FuncAdjustGV1+i, val);
         val++;
diff --git a/radio/src/gui/menu_model.cpp b/radio/src/gui/menu_model.cpp
index ba0c68abc..31bb23f73 100644
--- a/radio/src/gui/menu_model.cpp
+++ b/radio/src/gui/menu_model.cpp
@@ -4605,7 +4605,6 @@ void menuModelLogicalSwitches(uint8_t event)
     }
 #endif
 
-
     if ((s_editMode>0 || p1valdiff) && attr) {
       switch (horz) {
         case LS_FIELD_FUNCTION:
@@ -4679,9 +4678,9 @@ void menuModelLogicalSwitches(uint8_t event)
 #endif
 
 #if LCD_W >= 212
-  #define MODEL_CUSTOM_FUNC_1ST_COLUMN          (5+4*FW)
-  #define MODEL_CUSTOM_FUNC_2ND_COLUMN          (9*FW)
-  #define MODEL_CUSTOM_FUNC_3RD_COLUMN          (21*FW)
+  #define MODEL_CUSTOM_FUNC_1ST_COLUMN          (5+3*FW)
+  #define MODEL_CUSTOM_FUNC_2ND_COLUMN          (8*FW)
+  #define MODEL_CUSTOM_FUNC_3RD_COLUMN          (20*FW)
   #define MODEL_CUSTOM_FUNC_4TH_COLUMN          (33*FW-3)
   #define MODEL_CUSTOM_FUNC_4TH_COLUMN_ONOFF    (34*FW-3)
 #else
@@ -4798,7 +4797,11 @@ void menuModelCustomFunctions(uint8_t event)
           if (CFN_SWITCH(sd)) {
             lcd_putsiAtt(MODEL_CUSTOM_FUNC_2ND_COLUMN, y, STR_VFSWFUNC, func, attr);
             if (active) {
+#if defined(CPUARM)
+              CFN_FUNC(sd) = checkIncDec(event, CFN_FUNC(sd), 0, FUNC_MAX-1, EE_MODEL, isAssignableFunctionAvailable);
+#else
               CHECK_INCDEC_MODELVAR_ZERO(event, CFN_FUNC(sd), FUNC_MAX-1);
+#endif
               if (checkIncDec_Ret) CFN_RESET(sd);
             }
           }
@@ -4844,17 +4847,26 @@ void menuModelCustomFunctions(uint8_t event)
           INCDEC_DECLARE_VARS();
           int16_t val_displayed = CFN_PARAM(sd);
           int8_t val_min = 0;
+#if defined(CPUARM)
+          int16_t val_max = 255;
+#else
           uint8_t val_max = 255;
+#endif
           if (func == FUNC_SAFETY_CHANNEL) {
             val_displayed = (int8_t)CFN_PARAM(sd);
             val_min = -125; val_max = 125;
             lcd_outdezAtt(MODEL_CUSTOM_FUNC_3RD_COLUMN, y, val_displayed, attr|LEFT);
           }
+#if defined(CPUARM)
+          else if (func == FUNC_SET_TIMER) {
+            val_max = 59*60+59;
+            putsTime(MODEL_CUSTOM_FUNC_3RD_COLUMN, y, val_displayed, attr|LEFT, attr);
+          }
+#endif
 #if defined(AUDIO)
           else if (func == FUNC_PLAY_SOUND) {
             val_max = AU_FRSKY_LAST-AU_FRSKY_FIRST-1;
             lcd_putsiAtt(MODEL_CUSTOM_FUNC_3RD_COLUMN, y, STR_FUNCSOUNDS, val_displayed, attr);
-            break;
           }
 #endif
 #if defined(HAPTIC)
diff --git a/radio/src/gui/menus.cpp b/radio/src/gui/menus.cpp
index 3296994d4..5bdbeb484 100644
--- a/radio/src/gui/menus.cpp
+++ b/radio/src/gui/menus.cpp
@@ -1306,6 +1306,11 @@ bool isAssignableFunctionAvailable(int16_t function)
       return false;
 #endif
 
+#if !defined(GVARS)
+    case FUNC_ADJUST_GVAR:
+      return false;
+#endif
+
     default:
       return true;
   }
diff --git a/radio/src/myeeprom.h b/radio/src/myeeprom.h
index cbcfd1389..2ec811d6c 100644
--- a/radio/src/myeeprom.h
+++ b/radio/src/myeeprom.h
@@ -726,6 +726,9 @@ enum Functions {
   FUNC_TRAINER,
   FUNC_INSTANT_TRIM,
   FUNC_RESET,
+#if defined(CPUARM)
+  FUNC_SET_TIMER,
+#endif
   FUNC_ADJUST_GVAR,
 #if defined(CPUARM)
   FUNC_VOLUME,
diff --git a/radio/src/translations/en.h b/radio/src/translations/en.h
index 6f2777606..1e0260733 100644
--- a/radio/src/translations/en.h
+++ b/radio/src/translations/en.h
@@ -225,7 +225,7 @@
 #endif
 
 #if defined(CPUARM)
-  #define TR_VFSWFUNC          "Safety\0   ""Trainer\0  ""Inst. Trim""Reset\0    " TR_ADJUST_GVAR "Volume\0   " TR_SOUND TR_PLAY_TRACK TR_PLAY_VALUE TR_CFN_BG_MUSIC TR_VVARIO TR_HAPTIC TR_SDCLOGS "Backlight\0" TR_CFN_TEST
+  #define TR_VFSWFUNC          "Safety\0   ""Trainer\0  ""Inst. Trim""Reset\0    ""Set Timer\0" TR_ADJUST_GVAR "Volume\0   " TR_SOUND TR_PLAY_TRACK TR_PLAY_VALUE TR_CFN_BG_MUSIC TR_VVARIO TR_HAPTIC TR_SDCLOGS "Backlight\0" TR_CFN_TEST
 #elif defined(PCBGRUVIN9X)
   #define TR_VFSWFUNC          "Safety\0   ""Trainer\0  ""Inst. Trim""Reset\0    " TR_ADJUST_GVAR TR_SOUND TR_PLAY_TRACK TR_PLAY_BOTH TR_PLAY_VALUE TR_VVARIO TR_HAPTIC TR_SDCLOGS "Backlight\0" TR_CFN_TEST
 #else