Further information for Pepperl + Fuchs PF Retroreflective sensor 239765 - GLV18-55/115b/120
Operating range: 0 ... 4 m, light transmitter: LED, light type: red, alternating light, 640 nm, signal output: 2 PNP, antivalent, short-circuit proof, open collectors, switching type: light/dark switching, connection: fixed cable 150 mm with connector M12 x 1, 4-pin, operating voltage: 10 ... 30 V DC, ambient temperature: -25 ... 60 °C (-13 ... 140 °F)