Description Smart Life app WIFI door window sensor, 7/24 open / close detection, widely used for garage doors, windows, cabinets and drawers. Wifi connection with your box, no hub required, Alert in case of attempted vandalism. Personalized intelligent scenes, personalize the way your devices talk to each other: when the front door is open at night, automatically switch on the lights welcome. When a backdoor is unexpectedly opened, trigger an alarm siren. Powerful ewelink app, get notifications and alerts through the Tuya Smart Life app, low battery alerts and check out Last 5 group opening / closing histories, share with your family. Work with Alexa Assistant IFTTT Nest Siri, hands-free to check the actual state of the door.