Mi Window And Door Sensor Cavi Audio & Video Thanks to a series of

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Mi Window And Door Sensor Cavi Audio & Video Thanks to a series ofMI WINDOW AND DOOR SENSOR Detector consisting of two parts, the actual sensor and the magnet, made of plastic. The sensor is powered by a button battery. To use it, you need a Gateway and the Xiaomi Home app. No installation required; simply attach it to the window or door. The alarm sounds when the window or door is opened. Turn the sensor on and off from your device. Through the app, you can activate the alert notification when the balcony or window