General description Get instant notifications pushed to your phone when a door or window opens or closes, keeping you informed. Whenever the sensor is triggered, it sounds an alarm to alert you that someone has opened your door or window. The device supports viewing open/close history and battery level on the app, ensuring you never miss any important moments or run out of battery. You can also share the sensors with family members for added monitoring. Technical specifications App: Tuya/Smart Life Wifi: Connected to router Compatibility: Android 4.4/iOS 8.0 or higher Battery: LR-3-1.5V x 2/AAA (not included) Battery life: 6000 triggers Color: White Material: ABS Measurement allowed error: +/- 1-3cm Other information Package Contents: 1 * door and window sensor Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing.