Photoelectric Through-beam Receiver, Range: 30000mm, Infrared light 850nm, Power Supply 10-30VDC, NPN/NPN Output, N.O. and N.C., light and dark switching, Cable connection, 51x49x180mm housing Specifications Rated operating distance 30000 mm Output type Relay contact Output function Normally Open (NO) Connection type Screw connection Housing type Rectangular Housing Material Plastic Type of light Infrared light Sensing mode Light-/dark switching Degree of protection IP55 Rated Operational voltage UB at DC 12 V ... 24 V