Operating range: 0 ... 6.5 m, light transmitter: LED, light type: red, alternating light, 640 nm, signal output: N-channel MOSFET, short-circuit proof, switching type: dark switching, connection: 2 m cable, 3 x 0.34 mm2, PVC, operating voltage: 20 ... 250 V AC/DC, ambient temperature: -20 ... 60 °C (-4 ... 140 °F)