Smart Door Window Sensor is compact and lightweight, very suitable for installing in door or window of your house to provide home security. With high sensitivity and quick response, it will push alarm notifications to the smart APP when the door/ window opens or closes. Features: Smart Door Window Sensor, 2 Options: Wifi or ZigBee type. A ZigBee smart gateway is required for using the ZigBee smart sensor, please prepare one by yourself. APP Remote Control: Add the device in APP to detect the status of your door/ window, easy to control the smart sensor via APP. Sensitive detection, fast response. Push Alarm Notifications: It will push notification message to your smartphone when the door/ window opens or closes, so you can discover the danger in time. Wide Application: Protects your door or window and provides home security. Widely used in home, garage, apartment, dorm, shop, office and so on. Intelligent Linkage: Create smart scenes with other smart devices that are also compatible with Smart/ Smart Life to realize DIY home automation. Easy Installation: With self-adhesive back for easy installation, no wire required. Please align the main device and the magnet; the distance between them is less than 20mm after installation. Battery Operated: Easy to install and replace 2 AAA batteries (not included). Low power consumption to ensure long standby time. Note:Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specifications: Type: Type 1 (Wi-Fi)/ Type 2 (ZigBee) -- Optional Color: White Material: ABS Wi-Fi: 2.4GHz ZigBee: ZigBee 3.0 APP Download: Compatible with Smart/ Smart Life Power Supply: 2 * 1.5V AAA Battery (Not included) Working Condition: 5-60, 20-80% RH Item Size: 50 * 50 * 17mm / 1.97 * 1.97 * 0.67in, 35 * 14 * 7mm / 1.38 * 0.55 * 0.28in Item Weight: 23g / 0.80oz Package Size: 8 * 7 * 2cm / 3.15 * 2.76 * 0.79in Package Weight: 36g / 1.28oz Package List: 1 * Smart Door Window Sensor 1 * Magnet