Doors are the most common place of entry in any home or property and should be protected by your alarm system. Alarm Contact Switches are magnetic switches used to protect doors and windows. The Home Security Store always recommends contacting every perimeter door in your home or business, and the 947-75 - Ademco Steel Door Contacts are clean recessed contacts that meet the requirements of steel doors.
- 3/4 in. (19mm) diameter with lock-in mounting caps
- Standard gap: 1/2 in. (13mm) in steel
- 5 foot zip cord leads are standard