Note 1.The product are zigbee temperature humidity sensor,need to work with tuya zigbee hub.May not work with other zigbee hub.such as zigbee2mqtt ect.. 2.The value between LCD and APP may not Synchronized.To save battery,it just update to the app server when it has +-0.5degree or 5% humidity difference.. Detail: 1. Radio transmission circuit and coding technology to solve signal interference blocking problem 2. Various temperature modes can be adjusted for different scenes 3. Wireless transmission of data signals, remote monitoring of mobile phones 4. Ultra low power consumption and long battery life 5. With low voltage monitoring prompt function 6. Timely send online reports to the host 7. Demolition design in the field of professional security 8. Split design, high reliability 9.Communication Mode : Zigbee 10.Host Dimension : 861 . 2x23mm 11.Operating Temperature : -10-55 C 12.Supply Voltage : DC3V ( AAA& 39; 2 battery not included) 13.Host Material : Fireproof PC + Fireproof ABS 14.Installation : 3M glue 15.Temperature Accuracy : + 0.3 degrees 16.Humidity Accuracy : + 3% RH