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Door and Window SensorHow does the Door and Window Sensor know if the door or window is open or closed?

Door and Window Sensor

Here, you'll find support for your Door and Window Sensor.

How does the Door and Window Sensor know if the door or window is open or closed?

Door and Window Sensors are made of two parts: a magnet (smaller piece) and a transmitter (larger piece). The sensor works by transmitting an open signal whenever the two pieces are separated by at least ¾ inch and transmitting a closed signal whenever they are brought within ¾ inch.

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