Operating range: 0 ... 3.5 m, light transmitter: LED, light type: red, alternating light, 632 nm, signal output: 1 PNP output, short-circuit proof, reverse polarity protected, open collector, switching type: light/dark switching, switchable, connection: device plug M12 x 1, 4-pin, operating voltage: 10 ... 30 V DC, class 2, ambient temperature: -25 ... 70 °C (-13 ... 158 °F)