Intruder Alarm Door Contacts

Every magnetic door contact comes as 2 parts. One part has connectors where it is wired back to the alarm systems control panel and the other part, which is usually almost identical to the first part is simply a magnet.

These two parts are installed usually on external doors with one part on the frame and the other part on the door itself. They are installed so when the door is closed the two parts are no more than 20mm apart. If the security system is set and the two parts of the contact are seperated due to someone opening the door the intruder alarm will activate.

There are many types of door contacts available in the security indusrty designed for different types of doors including up and over garage doors, roller shutter doors, double doors and of course standard doors. They are also available in different shapes, sizes and materials including plastic and aluminium.

Some door contacts are also available as white and brown so as to fit in better with the colour of the door.