Features: 1REAL TIME MONITORING: Smart sensor based on for Tuya intelligent for zigbee technology design, real time monitoring of doors and window status. It can be connected to the intelligent security system, isolate the alarm to guard the family safety. 2LUMINANCE LIGHT SENSOR: Wireless door window sensor is equipped with luminance light sensor, intelligent sensing switchfunction. Linkage interrupter, switch, light bulb, socket, motor, etc. to realize smart home. 3DOOR MAGNETIC SENSOR: Smart motion sensor is able to sense the opening or closing of doors, window, electrical appliances and furniture cabinet doors, drawers and so on. 4HISTORY RECORD, LONG LASTING LIFE: Wireless door window sensor has a history record, you can check the time of opening and closing. Battery life is more than 0.5 years (20 times per day). 5WIDELY COMPATIBLE: The sensor supports for Home Assistant. you can check the current brightness and battery level and open status by voice. Specification: Item Type:WirelessDoorWindowSensorMaterial: ABS, PCWeight: Approx. 25g/0.9ozSensor Size: Approx. 50x25x11mm / 1.97x0.98x0.43in Magnet Size: Approx. 30x15x10mm / 1.18x0.59x0.39in Battery: 1 x CR 2032 Button Battery (Shipped Without Battery)Battery Life: More Than 0.5 Years (20 Times a Day)Zigbee Frequency: for TuyaforZigbeeOperating Temperature: -10 ~ 55 Operating Humidity: 0%-99%RHLight Range: 0-1000lx2 in 1:1.Door Magnet: Sensing the Opening Closing of Doors, Window, Electrical Appliances and Furniture Cabinet Doors, Drawers, Etc.2. Brightness Sensor: Linkage of On Off Switch, Light Bulb, Socket, Motor, Etc. To Realize Smart Home Package List: 1 x Sensor (Battery Not Included)1 x Magnet1 x Adhesive Paper1 x Needle1 x Instruction Manual Note: Manual measurement please allow some error.