Further information for Pepperl + Fuchs PF Reflective light barrier polarizing filter 203774 - RL28-55-V-3018
Operating range: 0 ... 8 m, light transmitter: LED, light type: red, alternating light, 660 nm, signal output: 2 PNP, antivalent, short-circuit proof, reverse polarity protected, open collectors, switching type: light switching, connection: with 0.3 m fixed cable and M12 connector, 4-pin, operating voltage: 10 ... 30 V DC, ambient temperature: -40 ... 60 °C (-40 ... 140 °F)