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The Xiaomi smart door window sensor can detect the opening and closing of the door and window,then send a notification to your phone via the APP. Matching with other Xiaomi smart devices such as gateway remote control, smart bulb, air cleaner, etc. this sensor could help you create a smart control home.
* Portable, small size, easy to install
* Open your door and the lights automatically turn on.
* If there is an intruder, the alarm will immediately sound and video will be recorded.
* Automatically shutting off the air conditioner when a window opened. Air purifier automatic stand by.
* Low energy consumption techniques, button batteries for long use powering.