Operating range: 0 ... 2500 mm, light transmitter: LED, light type: red, 640 nm, signal output: 1 NPN output, short-circuit proof, reverse polarity protected, open collector, switching type: light/dark switching, electronically switchable, connection: device plug M12 x 1, 4-pin, operating voltage: 10 ... 30 V DC, class 2, ambient temperature: -30 ... 60 °C (-22 ... 140 °F)