Thanks for the project. Finally, I found a working disconnect in the absence of wi-fi. Well, the Serial.print is excellent! I have a few questions. I redid ds18b20 for one sensor, commented out the lines // DeviceAddress tempSensor corrected the line sensors.setResolution (10); but after that the temperature is not transmitted. Transmitted with these lines. And I don’t understand why such a line in the code: DallasTemperature DS18B20 (& oneWire); if present: DallasTemperature sensors (& oneWire) ;? Can I remove it?