Why Use Motion Detectors?
Some theories suggest that spirits give off infrared energy which is detected by infrared detectors. If this is the case, then it is possible for paranormal activity to set off the alarm of the infrared detector. This is one other step toward possibly proving that spirits are infrared. In any case, these devices are good for sensing movement when there should be none. One sensor can easily monitor an entire hallway or room. it is an ideal tool for indoor investigations. Infrared motion detectors sample the infrared light in front of the detector and convert it into an electrical signal which is then monitored by the internal circuits for changes in the signal. When something moves in front of the infrared detector, the infrared signature will change. This new signature is read by the detector, if there is enough of a change in the converted eletrical signal, the detector will set of an alarm or chime to notify the user that something has changed the infrared light in front of the devic
