No reading on DS18B20 on WiFi MQTT relay

Hi all
I’m just setting up this relay but I’m not seeing a reading for the temperature. On the Thermostat control page it just reads NaN.

Otherwise the relay seems to be working fine, WiFi etc. I can manually switch the relay on and off etc.

I haven’t changed any of the settings in the DS18B20 page but it is enabled.

What am I doing wrong?


Did you restart the board after enabling the sensor?

I have the impression that DS18B20 reading is NaN when the device is in hotspot mode after reset. When the device is connected to a hotspot as client, the DS18B20 works.