1.Tuya Smart ZigBee Door&Window Sensor:A Tuya ZigBee Wireless Gateway Hub is a must to work with the door&window sensor,as well as a variety of ZigBee smart products, which is proved to be and control center for smart homes and plays an irreplaceable role for all ZigBee products and realizes the whole intelligent linkage of your house.Simply add the sensor into the ZigBee hub after adding the hub into Smart Life/Tuya App. 2. Real-time remote monitoring:Whenever and wherever you are,once Door/Window Sensor detects external objects or animals, you will receive a notification by smart phone. Keep your house safe all the time.What you need to do is to keep your sensor with ZigBee hub connected. 3. Wide Applications:Apply the smart door/window sensor to different scenes,your bedroom,garage,bathroom,garden and anywhere you like,keeping your whole house away from danger with a linkage of the smart door/window sensor,together with various zigbee sensor with one zigbee hub required only. Easy to integrate into various environments. 4. Battery powered for low power consumption;New designed with hall sensing technology and tamper protection;Low battery reminder supported. 5. Easy installation with double-side tape,simply anywhere you like to protect your house security.Make intelligent linkage with other smart devices to achieve a comprehensive idea of intelligence. Detect door is open or closed, push notification to mobile phone Anti-demolition function,push notification when device is removed Battery: CR123A 3V(Delivered without batteries) USB Power supply: 5V/1A Standby current: 10.7uA Working Temperature: 0~ 40 (32F~104F) Working humidity: 20% ~ 85% Wireless frequency: 2.4GHz Network range: 40M Wireless protocol: Zigbee 3.0 IEEE 802.15.4 Size:Main body: 82mm x 27mm x 23mm Deputy body: 50mm x 13mm x 16mm Material: ABS colour: White Package Contents: 1 x Door Window Sensor Detector 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.