Honeywell 945T Frequently Asked Questions

What Do Normally Closed and Normally Open Mean?
"Normal" is the normal state of an opening, such as a door. Normally open/closed refers to the state of a contact connected to a door in its normal position.

How Do I Replace Old Alarm Sensor Magnets?
Find out how to replace an old alarm sensor magnet

Honeywell Glassbreak vs Window Sensors
Glass break detectors and windows sensors are both used to protect against a break-in through a window, but they work in very differnet ways.