With the potential free input the Aeotec Door/Window Sensor 7 can also include other sensors in your Z-Wave system. For that the binary sensor is connected to the potential free input of the sensor. Besides sensors there can also be connected momentary switches, which controls scenes in your gateway.
Should your Aeotec Door/Window Sensor 7 fail you once, the core - the circuit board - can be easily replaced without removing the sensor. This allows you to glue the device to the window frame and replace only the circuit board.
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