Security Cameras and Motion Detectors

One of the questions we're frequently asked is about using a motion detector in conjunction with security cameras.  Usually the request goes something like, "I only want to record when there is actual motion.  So can I attach a motion detector to my camera so that it only records when the motion detector picks something up?"  Well, thats a fine question.  On some of the older systems, thats how it worked.  But thats because the old systems usually hooked up to a VCR.

Today, however, most people purchase DVRs with their security camera systems.  DVRs now offer a software solution to take care of this.  Basically, your camera is constantly feeding data into your DVR, but your DVR only starts recording when it notices pixel change.  The same set-up allows you to set your DVR to stop recording after a certain period of time without any pixel changes.  This is a much neater way to accomplish the above problem.