Specifications: 1. Real time monitoring of every opening and closing of doors and windows, immediate push of alarm information for abnormal changes, and remote real-time viewing of switch status through the APP; 2. Wide Applications: Apply the smart door/window sensor to different scenes, your bedroom, garage, bathroom, garden and anywhere you like, keeping your 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 3. Battery powered, low power consumption, one year standby 4. Home mode: Open the door and automatically turn on the light. At night, open the door and automatically turn on the light to welcome you, The product contains a 200mah rechargeable battery that supports USB power supply 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.It can be flexibly installed in various positions such as doors, windows, drawers, etc. Description: ZigBee USB Door/Window Sensor Detect the open/close status of doors and windows, and push notifications to mobile phones Power supply: DC 5V1A (Type-C) Battery capacity: 200mAh rechargeable battery Charging duration: 2 hours Wireless Technology: Zigbee3.0 IEEE 802.15.4 Material: plastic colour: white Package Contents: 1 x Sensor 1 x Charging cable 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.