[Instant notification] Get instant notifications pushed to your phone instantly when a door or window opens or closes. Keeping you informed. [Alarm prompt] Whenever the sensor is triggered to open/close, it sound an alarm to alert you that someone has opened your door or window. [Alarm recording] Supports viewing open/close history and battery level on the app. Never worry about missing any important moments or running out of battery. [Device Sharing] Select "Family Management" on the "My" page to share the added sensors with your family. This way they can also monitor the status of doors/. [Low battery reminder] When the battery is low, it automatically remind you to replace the battery, don't worry Product name:Wifi smart door and window sensor APP:Tuya/Smart Life Wifi:Connected to router Support:For Android 4.4/iOS 8.0 or higher Battery:LR-3-1.5V x 2/AAA (not included) Battery life:6000 triggers Features:Mobile APP remote control Features:Real-time alerts and notifications