diff --git a/sonoff/xdrv_16_tuyamcu.ino b/sonoff/xdrv_16_tuyamcu.ino
index 797cdba8f..2cf63c8d0 100644
--- a/sonoff/xdrv_16_tuyamcu.ino
+++ b/sonoff/xdrv_16_tuyamcu.ino
@@ -276,8 +276,11 @@ bool TuyaSetPower(void)
   uint8_t rpower = XdrvMailbox.index;
   int16_t source = XdrvMailbox.payload;
 
+  uint8_t dpid = TuyaGetDpId(TUYA_MCU_FUNC_REL1 + active_device - 1);
+  if (dpid == 0) dpid = TuyaGetDpId(TUYA_MCU_FUNC_REL1_INV + active_device - 1);
+
   if (source != SRC_SWITCH && TuyaSerial) {  // ignore to prevent loop from pushing state from faceplate interaction
-    TuyaSendBool(active_device, bitRead(rpower, active_device-1) ^ bitRead(rel_inverted, active_device-1));
+    TuyaSendBool(dpid, bitRead(rpower, active_device-1) ^ bitRead(rel_inverted, active_device-1));
     status = true;
   }
   return status;