Functions and Specification: 1.Vertical coaxial adjustment on each unit, fast, easy and accurate. 2.Can adjust the angle of transmitter and receiver optionally. 3.Perfect function of anti-cutting & short circuit, and tamper resistant, pet immunity. 4.A srical optical lens, stability for detection. 5.All-weather outdoor usage, totally air-proof design. 6.Anti strong light up to 50000 LUX, totally resistance to external interference. 7.Adopts displacing diode, which has solved the problem of interference between near frequencies. 8.Infrared beams: 3 beams 9.Response speed:open time>=1.5s, trigger time:40ms 10.Alarm output:NC or NO rating AV/DC 30V/0.5A max, Tamper output:NC rating AC/DC24V/0.5mA 11.Operating voltage:DC12V~18V 12.Operating current: Receiver<=35mA, transmitter<=75mA 13.Temperature:-25âï½55â 14.Detector length:53cm