How Infrared Security Works | eHow.com
Read whole article at: http://www.ehow.com/how-does_5911843_infrared-security-works.html
An infrared security system works with an infrared light beam detector that serves as an access control/entry detection of a door or window, proving the threshold crossing alert as needed. When the infrared beam is broken by a person or object in its path, it will be detected by the system. The system also works with infrared security cameras, glass breaking sensors and shrill and silent alarms.
February 1st, 2010 Posted by Rianne | Others | no comments
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