Specifications: 1. Real time monitoring of every opening and closing of doors and , 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 whole house away from danger with a linkage of the smart door/window sensor, together with zigbee sensor with one zigbee hub required only. Easy to integrate into 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 positions such as doors, , drawers, etc. Description: ZigBee USB Door/Window Sensor Detect the open/close status of doors and , 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: blue 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.