Recessed contact sensors 2 surface contact sensors 4 you can add more devices during checkout.
Digital life recessed contact sensors.
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A reed switch is a simple electrical switch that is operated by an applied magnetic field.
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A big part of any home automation security system is the contact sensors that let you monitor the state of the windows and doors.
I have opened the case of the sensor but can find no way to put it into pairing mode.
Most often these sensors use a reed switch on the stationary window door frame and a magnet on the moving window door.
Contact sensor recessed created date.
When the magnet together the circuit is conductive light on.
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Widely usedl this recessed door contact sensor works with any access control or burglar alarm system available normally closed n c.
These are the surface mount sensors.
When the magnet separates the circuit is not conductive light off.