1. Zigbee3.0 Wireless Protocol; Detect Light In The Environment 2. Support Custom Lighting Range, Intelligent Linkage Equipment; Sensitive Hall Sensor, Fast Detection 3. Quickly Add Devices With One Key; Super Long Standby Time 4. Multi-Scenario Installation And Use 5. Support Intelligent Linkage With Other Devices; Easy To Install And Easy To Use Product Positioning: Widely Used In Rooms, Shops, Convenience Stores, Finance Rooms, Villas, Communities And Where Valuables Are Stored, In Order To Detect Whether Doors, Windows, Drawers, Etc., Are Opened Or Illegally Moved. Description: 1. Button: One Button 2. Working Voltage: 3V 3. Wireless Protocol: Zigbee 3.0; Wireless Distance 50 Meters (Open Space) 4. Indicator Light: Red Indicator Light 5. Sensing Distance: 15mm 6. Standby Current: 23uA 7. Illumination Range: 0~1000 8. Accuracy: 50 9. Battery Type: CR2032 10. Standby Time: 12 Months 11. Working Temperature: -10~55 12. Working Humidity: 0%~99%RH 13. Product Size: 50x25x11mm (Host); 30x15x10mm (Magnetic Strip) 14. Tuya Smart APP: Support Smart Life APP, Tuya Smart APP(With Zigbee Gateway) 15. Intelligent Linkage: Support 16. Installation: Adhesive Paste 17. Historical Record: You Can View Historical Alarm Information And 18. Linkage Record Information 19.Colour:White 20.Material:ABS Package Contents: 1 x Host 1 x Magnetic Stripe 1 x Chinese And English Manual 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.