diff --git a/src/selftest/selftest_local.h b/src/selftest/selftest_local.h
index dcfcce78f..ec14818cf 100644
--- a/src/selftest/selftest_local.h
+++ b/src/selftest/selftest_local.h
@@ -76,7 +76,8 @@ void Test_TwoPWMsOneChannel();
 void Test_ClockEvents();
 void Test_Commands_Channels();
 void Test_LEDDriver();
-void Test_TuyaMCU_Basic();
+void Test_TuyaMCU_Basic(); 
+void Test_TuyaMCU_Calib();
 void Test_TuyaMCU_Boolean();
 void Test_TuyaMCU_DP22();
 void Test_TuyaMCU_Mult();
diff --git a/src/selftest/selftest_tuyaMCU.c b/src/selftest/selftest_tuyaMCU.c
index 280498905..1446dc1a8 100644
--- a/src/selftest/selftest_tuyaMCU.c
+++ b/src/selftest/selftest_tuyaMCU.c
@@ -667,5 +667,57 @@ void Test_TuyaMCU_Basic() {
 
 	SIM_ClearUART();
 }
+void Test_TuyaMCU_Calib() {
+	{
+		// reset whole device
+		SIM_ClearOBK(0);
+
+		SIM_UART_InitReceiveRingBuffer(2048);
+
+		CMD_ExecuteCommand("startDriver TuyaMCU", 0);
+
+		g_cfg.pins.channelTypes[3] = ChType_Voltage_div10;
+		g_cfg.pins.channelTypes[7] = ChType_Current_div1000;
+		g_cfg.pins.channelTypes[9] = ChType_Power;
+
+		CMD_ExecuteCommand("linkTuyaMCUOutputToChannel 113 RAW_VCPPfF", 0);
+		CMD_ExecuteCommand("uartFakeHex 55 AA 03 07 00 13 71 00 00 0F 09 29 00 01 B7 00 03 FC 00 00 00 03 E8 C3 32 65", 0);
+		// above command will just put into buffer - need at least a frame to parse it
+		Sim_RunFrames(100, false);
+
+		SELFTEST_ASSERT_CHANNEL(3, 2345);
+		SELFTEST_ASSERT_CHANNEL(7, 439);
+		SELFTEST_ASSERT_CHANNEL(9, 1020);
+
+
+		SIM_ClearUART();
+	}
+	{
+		// reset whole device
+		SIM_ClearOBK(0);
+
+		SIM_UART_InitReceiveRingBuffer(2048);
+
+		CMD_ExecuteCommand("startDriver TuyaMCU", 0);
+
+		g_cfg.pins.channelTypes[3] = ChType_Voltage_div10;
+		g_cfg.pins.channelTypes[7] = ChType_Current_div1000;
+		g_cfg.pins.channelTypes[9] = ChType_Power;
+
+
+		CMD_ExecuteCommand("linkTuyaMCUOutputToChannel 113 RAW_VCPPfF -1 0 1 0 22 33 44", 0);
+		CMD_ExecuteCommand("uartFakeHex 55 AA 03 07 00 13 71 00 00 0F 09 29 00 01 B7 00 03 FC 00 00 00 03 E8 C3 32 65", 0);
+		// above command will just put into buffer - need at least a frame to parse it
+		Sim_RunFrames(100, false);
+
+		SELFTEST_ASSERT_CHANNEL(3, 2345+22);
+		SELFTEST_ASSERT_CHANNEL(7, 439+33);
+		SELFTEST_ASSERT_CHANNEL(9, 1020+44);
+
+
+		SIM_ClearUART();
+	}
+
+}
 
 #endif
diff --git a/src/win_main.c b/src/win_main.c
index 20096c244..972d295a4 100644
--- a/src/win_main.c
+++ b/src/win_main.c
@@ -190,6 +190,7 @@ void Win_DoUnitTests() {
 #if ENABLE_BL_SHARED
 	Test_EnergyMeter();
 #endif
+	Test_TuyaMCU_Calib();
 	// this is slowest
 	Test_TuyaMCU_Basic();
 	Test_TuyaMCU_Mult();