SMART SECURITY SENSOR: All alarm record history can be check in app; All the statuses of doors and be displayed simultaneously in the app; Share the device to your families, they can check the status and get notified at the same time SMART HOME AUTOMATION: You can set a condition in the smart scene, Automatically turn on your smart wall switches or lights when door opened; or the air conditioner in your room is turned off once your window is open. More smart devices can be sync as long as they compatible with Smart Life app. FREE APP ALERTS FOR PEACE OF MIND: No hub required; The window door contact sensor is controlled by Tuya Smart App or Smart Life App. An alert notification automatic send to you once the sensor triggered; A must have security system accessories VOICE CONTROL: The Smart door sensor is compatible with and Assistant, Simply give a voice to check if your door is open or close, such as " , is the front door open?" APP remote control is connected to the app via WIFI without a hub.After the connection, the user can monitor the status of and anytime, anywhere., Manufacturer: CTRLZS