diff --git a/tools/esp8266/html/serial.html b/tools/esp8266/html/serial.html
index 2f9744fc..933f5bdc 100644
--- a/tools/esp8266/html/serial.html
+++ b/tools/esp8266/html/serial.html
@@ -20,6 +20,14 @@
                 <hr>
                 <h3>handle next buttons with care - test / debug only!!</h3>
                 <br/>
+                <label for="iv">Choose ur Inverter:</label>
+                <select name="iv" id="iv">
+                  <option value="0">0</option>
+                  <option value="1">1</option>
+                  <option value="2">2</option>
+                  <option value="3">3</option>
+                </select>
+                <br/>
                 <input type="button" value="power limit 100%" class="btn" id="pwrlim2"/>
                 <input type="button" value="power limit 10%" class="btn" id="pwrlim"/>
                 <input type="button" value="Turn Off" class="btn" id="turnoff"/>
@@ -98,6 +106,7 @@
                 var obj = new Object();
                 obj.cmd = 20;
                 obj.tx_request = 81;
+                obj.inverter = get_selected_iv();
                 getAjax("/api/ctrl", ctrlCb, "POST", JSON.stringify(obj));
             });
 
@@ -130,6 +139,12 @@
                 obj.payload = [2000, 1];
                 getAjax("/api/ctrl", ctrlCb, "POST", JSON.stringify(obj));
             });
+
+            function get_selected_iv()
+            {
+                var e = document.getElementById("iv");
+                return  e.value;
+            }
         </script>
     </body>
 </html>
diff --git a/tools/esp8266/web.cpp b/tools/esp8266/web.cpp
index 1aadebc1..858968b8 100644
--- a/tools/esp8266/web.cpp
+++ b/tools/esp8266/web.cpp
@@ -392,6 +392,10 @@ void web::showWebApi(AsyncWebServerRequest *request) {
                 iv->devControlCmd = TurnOn;
                 iv->devControlRequest = true; // queue it in the request loop
             }
+            if (response["cmd"] == (uint8_t)CleanState_LockAndAlarm) {
+                iv->devControlCmd = CleanState_LockAndAlarm;
+                iv->devControlRequest = true; // queue it in the request loop
+            }
         }
     }
     request->send(200, "text/json", "{success:true}");
diff --git a/tools/esp8266/webApi.cpp b/tools/esp8266/webApi.cpp
index 21225052..dc08d327 100644
--- a/tools/esp8266/webApi.cpp
+++ b/tools/esp8266/webApi.cpp
@@ -336,8 +336,12 @@ void webApi::getRecord(JsonObject obj, record_t<> *rec) {
 //-----------------------------------------------------------------------------
 bool webApi::setCtrl(DynamicJsonDocument jsonIn, JsonObject jsonOut) {
     uint8_t cmd = jsonIn[F("cmd")];
+
+    // Todo: num is the inverter number 0-3. For better display in DPRINTLN
+    uint8_t num = jsonIn[F("inverter")]; 
+
     if(TX_REQ_DEVCONTROL == jsonIn[F("tx_request")]) {
-        DPRINTLN(DBG_INFO, F("devcontrol, cmd: 0x") + String(cmd, HEX));
+        DPRINTLN(DBG_INFO, F("devcontrol [") + String(num) + F("], cmd: 0x") + String(cmd, HEX));
         if(ActivePowerContr == cmd) {
             Inverter<> *iv = getInverter(jsonIn, jsonOut);
             if(NULL != iv) {