... 4.Excellent quality,attractive price Product overviewZYT-94 Hot and cold object laser beam detector is a highly sensitive laser-beam detection device, ... detector.Equipment typeZYT-94(N,P,Z) N:NPN P:PNP Z:relayProduct features1.Emission source adopt pulse modulation laser , high ... .Detection distance can be adjusted within 50 meters5.Detector power supply, controller, signal output integration, easy ...