Further information for Pepperl + Fuchs PF light switch energy - RL29-8-2000/73c/136
Sensing range: 20 ... 2000 mm, adjustable, light transmitter: LED, light type: red, alternating light, 660 nm, signal output: 2 push-pull outputs, short-circuit proof, reverse polarity protected, switching type: light switching, connection: plastic plug M12 x 1, 4-pin, operating voltage: 10 ... 30 V DC, ambient temperature: -25 ... 60 °C (-13 ... 140 °F)