Motion sensor alarms are used to detect the presence of someone or something in an area where they shouldn’t be. By using infrared technology, these devices can sense when someone walks in front of them and will sound an alarm to alert the owner. More than one sensor can be used around the home or business to protect a very large area. Some alarms will even call a phone number when triggered letting you know something is wrong.

This entry was posted on Wednesday, October 21st, 2009 at 3:19 pm and is filed under Cool Gadgets, Home Security. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.