MC-56 NO Alarm Security Rolling Gate Garage Door Contact Magnetic Reed Switch Silver Gray Recessed Pull Handles 2pcs x 6mm T Connector

2pcs x 6mm T Connector

great replacement

the lock tongue will extend to lock the door

handicraft

MC-56 NO Alarm Security Rolling Gate Garage Door Contact Magnetic Reed Switch Silver Gray Recessed Pull Handles 2pcs x 6mm T ConnectorDescription: 1. Silver gray zinc alloy housing. 2. The reed switch is an electrical switch operated by an applied magnetic field. 3. Designed for use with alarm systems. Great for use in family and factory window, door. etc. 4. Screw Mounted for easily install. 5. NO means Normally Open: when the magnet separate, the circuit is conductive( light on ); When the magnet together, the circuit is not conductive ( light off ). When make order,pls check