Pepperl & Fuchs PEPPERL+FUCHS ML100-8-HGU-100-RT/1

Sensing range: 10 to 100 mm, light emitter: LED, light type: red, flashing light, signal output: 1 NPN output, short-circuit proof, reverse polarity protection, open collector. The sensor's circuit type is switchable. The factory setting is light-on. Connection: fixed cable 2 m, operating voltage: 10 to 30 V DC, ambient temperature: -30 to 60 °C (-22 to 140 °F).