【Smart Home Security Sensor】This door sensor alarm is a great addition to your home security. for any contact structure: front door, window, baby room, garage doors, skylight, safe, etc. Note the safety barrier at the top of the stairs. All door and window states are displayed in the application at the same time. No hub required. 【Programmable Smart Sensor】Expand your smart home automation with the WiFi door sensor; Configure your smart routines in the app; Automatically turn on your smart wall switches or lights when the door is opened; Automatically turn off your air conditioner when the window is opened. More smart devices can be synced as long as they are compatible with the Smart Life app. 【Alert Notification】The smart door and window sensor is compatible with the Smart Life app and the Tuya Smart app. You will receive an alarm signal from your phone app when the door sensor detects that your door or window is opened. You don't have to worry about someone entering your home