.

src/modules/sensors/Pzem004t/Pzem004t.cpp

@@ -14,12 +14,16 @@ class Pzem004v : public IoTItem {
    public:
     Pzem004v(String parameters) : IoTItem(parameters) {
         addr = jsonReadStr(parameters, "addr");
-        pzem = new PZEMSensor(myUART, hexStringToUint8(addr));
+        if (myUART) {
+            pzem = new PZEMSensor(myUART, hexStringToUint8(addr));
+        }
     }
 
     void doByInterval() {
-        value.valD = pzem->values()->voltage;
-        regEvent(value.valD, "Pzem Voltage");
+        if (pzem) {
+            value.valD = pzem->values()->voltage;
+            regEvent(value.valD, "Pzem Voltage");
+        }
     }
 
     ~Pzem004v(){};

src/modules/sensors/Pzem004t/modinfo.json

@@ -27,7 +27,7 @@
             "name": "PZEM 004t Мощность",
             "type": "Reading",
             "subtype": "Pzem004w",
-            "id": "A",
+            "id": "W",
             "widget": "anydataWt",
             "page": "Сенсоры",
             "descr": "Мощность",