Fangrui Product Details Upgrade Wifi Smart Alert: By Connecting Wifi (2.4ghz Only) To Your Phone. Set A Timer On The Application As Needed To Disarm The Door And Window Alarm Sensors; Set Delay Alarm, Alarm Time, And Alarm Volume. When The Battery Is Low, Receive A Low Battery Alarm Notification. Remote Alarm Reception: When A Thief Opens Or Breaks Into Store Or Home, The Door Alarm Sound And Issue An Alarm To Stop The Thief, Attract The Attention Of Neighbors And Family, And Immediately Notify You Through The App. Remotely Monitor: You Can View The Application At Any Time And Remotely Monitor The Status Of Doors And In Real-time. . Door And Window Sensors Can Easily Monitor The Safety Of Your Home, Providing Security And Your Family. Compatibility Apps:the Door Alarm Is Compatible With Andriod And Ios-tuya, Smart Life, Assistant, . The Door And Window Sensor Is Controlled By The Tuya Smart Or Smart Life App. You Can Download The App From The , Or By Scanning The Qr Code On The Package Or The User Manual. Colour:white Materia