3pcs MC-31 Surface Mount Wired NO+NC Door Contact Sensor Alarm Magnetic Reed Switch White Extension Cords simple connection

simple connection

thickened PVC layer

33-inch (L*W*H)

- Eelectric lifting magnet

2 x Stainless Steel Tee Pipe Fitting

3pcs MC-31 Surface Mount Wired NO+NC Door Contact Sensor Alarm Magnetic Reed Switch White Extension Cords simple connectionDescription: 1. Screw Mounted for easily install, PVC. 2. The reed switch is an electrical switch operated by an applied magnetic field. 3. Switch Type: 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 ), NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not