Operating range: 0 ... 3.5 m in teach mode 0 ... 5.7 m in normal mode, light transmitter: LED, light type: red, alternating light, 660 nm, signal output: 1 push-pull output, short-circuit proof, reverse polarity protected, switching type: light switching, connection: device plug M8 x 1, 4-pin, operating voltage: 10 ... 30 V DC, class 2, ambient temperature: -20 ... 60 °C (-4 ... 140 °F)