MC-52 NC Alarm Security Rolling Garage Door Contact Magnetic Reed Switch/ 2Set Bag Luggage Straps Poles: 4 Positions (Dual Row)

Poles: 4 Positions (Dual Row)

Product Name: Double Ball Catch

Never again hear the annoying scraping sound of a chair being pushed against a hard surface

Float Ball Number: 1

in both positions

MC-52 NC Alarm Security Rolling Garage Door Contact Magnetic Reed Switch/ 2Set Bag Luggage Straps Poles: 4 Positions (Dual Row)Description: 1. Actuation Distance: 25 40mm. 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. NC means Normally Closed: When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ).