Magnetic contact, magnetic switch 1) Diameter: 1"dima. 2) Suitable for steel door install 3) Standard 18" #22AWG leads Magnetic contacts, Magnetic switch, contact switchSpecification:1) Diameter: 1"dima. press to fit2) Suitable for steel door install3) Standard 18" #22AWG leads4)Self-locking5)Special leads avaliable6)Swith and magnets avaliable seperetly7)Color: White,Brown ,GreyOrder information ...