Ultra-small appearance, simple design saves limited space. It can be used with USB power supply or battery; battery standby time is more than one year. Support temperature and humidity data export,data cloud storage up to . Wide coverage, strong wall penetration, good anti-interference performance, low heating and power consumption. Multi-network integration, free switch between WIFI and Zigbee. The device could set linkage even If there is no WiFi network. Security assurance, privacy protection. It uses the high-level encryption method to transmit informationvia both WIFI and Zigbee to network communication security and prevent malicious intrusion. The product is widely used in family residential areas, real estate villas, factory buildings,computer rooms,warehouses, office buildings and other places. Product Overview: The zigbee temperature&humidity alarm is working with zigbee gateway. It uses advanced signal analysis and processing technology to provide user ultra-high-precision detection andanti-false alarm performance which is designed to guarantees the product stability. When the temperature and humidity of the detection environment exceed the set upper and lower limits, it would set linkage with other smart device as well as report to user so that he could remote monitor the premise temperature humidity real-time. Parameter: Temperature alarm range:-20-85 Temperature and humidity alarm range:-20-100 Detection humidity: 0-99%RH (non-condensation) Standby current:1uA Working current:0.2mA Battery capacity:450mAh Battery standby time:1 year USB power supply:5V1A time:10s Temperature humidity accuracy:0.5;1%RH Measurement error:1 3%RH Working channel:11-26.400-2.483GHz Transmitting distance: equal 40m (in the open air)Transmission rate:250Kbps Wireless encryption: 128bit encryption WPA-/WPA2-;WPA/WPA2 Security Mechanism Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC 220V Type:A:Without Humidity Sensor Colour:As Shown Material:Plastic Package Contents: 1 * Tuya Smart Zigbee Thermometer 1 * Power Adapter 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.