Overhead Door Garage Roll-Up Shutter Security Alarm Contact Sensor

Overhead Door Garage Roll-Up Shutter Security Alarm Contact Sensor MPN: DT-3012 Condition: New Overhead Mounted Switch with Magnet Heavy Duty Roller Shutter Contact Magnet Mounted on adjustable L-Bracket Wide Operating Gap 3" minimum 30-3/4" PVC 22AWG Cable with 21-1/2" armored sleeve 50mm x 106mm x 50mm for L bracket 105mm x 45mm x 10mm for contact Not for AC voltage When the magnet is next to the switch, the loop is closed When the magnet is pulled away the loop opens