2 In 1 Smart Zigbee Door Window Sensor, Compatible With Home Assistant 1. Requires pairing with a Zigbee gateway 2. Wireless protocol: Zigbee 3.0 3. Operating voltage: 3V 4. Sensing distance: ≥15mm 5. Standby current: ≤4μA 6. Standby duration: ≥12 months 7. Operating temperature: -10 to 55°C 8. Operating humidity: 0%-99%RH 9. Wireless range: ≥100 meters (open space) 10. Power supply: included CR2032 button battery 11. Size: main unit about 5 x 2.5 x 1.1cm, magnetic strip about 3 x 1.5 x 1cm 12. Weight: about 25g Features: 1. Install the doorwindow sensor on doors or windows. When opened, it triggers the alarm host to instantly push alerts to your mobile device 2. Receive alerts on your phone when doorswindows are opened or left open, preventing carelessness-related losses 3. Utilizes Hall sensor technology for rapid response and accurate detection without false alarms, providing enhanced home security 4. Multiple smart linkage modes: When leaving home, activate the linked arming mode. Should strangers enter, gas leaks occur, water pipes leak, or other safety hazards arise, the device will notify the owner with real-time detection information, preventing unnecessary property damage 5. Linked switch for automatic air purification: When doors and windows are closed indoors, the sensor automatically triggers the air purifier to operate. It shuts off automatically when not needed, avoiding wasted electricity 6. Automatic lighting activation: upon entering at night, doorwindow sensors automatically trigger smart lighting systems, eliminating the need to fumble for switches in the dark 7. Simple installation with no wiring required. After installing batteries, simply attach to doors, windows, drawers, cabinets, etc., positioning sensors at openingclosing points (main unit on fixed surface, magnetic strip on moving surface; installation gap must be less than 22mm when doorwindow is closed).