Cause of false alarm??

[dakota00]

I installed the alarm system about a year ago never had any issues until today.  When I came home from work, I noticed that the alarm went off and one of the motion sensors triggered the alarm.

The panel is a PC1616, keypads (2) are PK5508 and the motion sensors (2) are DSC BV-300

I have no pets and nothing was out of place to set the motion sensor off, what could cause the false alarm??

Thanks,
Anthony

[Fishlips25]

Try cleaning it off. Usually spiders is the #1 cause. You wouldn't think it but a cob web or spider right on the lens will give false alarms. You may also wants to remove the cover and make sure its clean inside also.

[dakota00]

no kidding, never thought of a spider. 

I took a look at the sensors and they are clear. 

Thanks!!

[richallenmusic]

I've found spiders roaches lady bugs inside of motion detectors make sure you take cover off and check also make sure wires have not vibrated loose just pull them to see