The most basic sensors of any alarm system is a door and window magnetic contact switch. Unlike conventional surface-mount magnetic contact switches, the Enforcer Recessed-Mount Magnetic Contact Sensor Switch are completely hidden once installed. It is designed for use with normally closed circuits, which means that when the magnets are lined up, the switch is closed. The magnetic contacts can be hardwired to almost any security system as a way to monitor doors, windows, and sliding doors. Each sensor is 1″ long and requires a 7/16″ wide hole to be drilled in the edge of a door or window jamb. The switch and magnet have ribs for securing in holes, allowing you to press fit them into place. There is an operational gap 3/4″. The wires are can be passed through the jamb and framing and run over to the alarm system controller. Both the switch and wire are completely invisible when the door or window is closed.
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