This ensor is a Tuya Zgbee solution. It can't connect to WiFi. It doesn't work alone. It needs to work with Tuya Zigbee hub or Tuya Multi-Mode Gateway. It does not support other gateways and does not support Zigbee2MQTT. It cannot be used as a normal temperature and humidity sensor, it must be linked to the Tuya Zigbee gateway or Tuya multimode gateway. Power Supply: CR2032(optional) Temperature Measure Range: -9.9℃-60℃ Temperature Accuracy: ±1℃ Humidity Measure Range: 0% RH-99% RH Humidity Accuracy: ±5% RH Colour:White Material:Plastic Package Contents: 1x Tuya Zigbee Temperature Humidity Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.