Further information for Pepperl + Fuchs PF retro reflective photocell 420966 - RL28-55/49/74
Operating range: 0 ... 17 m, light transmitter: LED, light type: red, alternating light, 660 nm, signal output: 1 NPN, 1 PNP synchronous switching, short-circuit proof, reverse polarity protected, open collectors, switching type: light/dark switching switchable, connection: device plug M18, 4-pin, operating voltage: 10 ... 30 V DC, ambient temperature: -40 ... 60 °C (-40 ... 140 °F)