PowerG Door & Window Security Sensors Frequently Asked Questions

Where Do I Install a Sensor Contact on a Door?
The best place to install a contact is on a door frame. The magnet should be installed on the moving part of the door, within a half-inch of the sensor. Learn about door contacts.

Where Can I Buy Alarm Contacts?
Alarm Grid offers all of the door and window contacts you need for your alarm system. We offer door and window sensors of all types. Learn about our alarm contacts.

What is a Door Contact Sensor
Alarm systems use door contact sensors to know whether or not doors are opened or closed. This is important for monitoring building activity. Learn about door contacts.