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