As illustrated, {HEAD ~ the infrared motion detector} includes {TAIL ~ detector means} 1 for receiving the radiation and for forming a signal from a characteristic change of the detected infrared radiation 
As illustrated , { HEAD ~ the infrared motion detector } includes { TAIL ~ detector means } 1 for receiving the radiation and for forming a signal from a characteristic change of the detected infrared radiation
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH