Sensing range: 7 ... 20 mm, light transmitter: 2 IRED, light type: infrared, alternating light, 880 nm, signal output: 2 push-pull outputs, short-circuit proof, reverse polarity protected, switching type: light switching: +UB dark switching: 0 V, connection: device plug M8 x 1, 4-pin, operating voltage: 10 ... 30 V DC, ambient temperature: -20 ... 60 °C (-4 ... 140 °F)