... TO-5 Dual Element PIR Pyroelectric Infrared Detectors Perkinelmer LHI778 LHI 778 TO-5 Dual Element PIR Pyroelectric ... and temperature changes. Features:Brand new original Perkinelmer LHI778 LHI 778 TO-5 Dual Element PIR Pyroelectric Infrared ... DetectorsManufacturer : perkinelmer www.perkinelmer.comPart Number : LHI 778 ( LHI778 )Package : TO-5 metal housingOthers PIR Sensor : RE200B D203S ...