The Telemecanique XS4P18KP340 is an M18 cylindrical inductive proximity sensor with an 8 mm sensing range, PNP/NPN output, and a 2 kHz switching frequency, packaged in a plastic housing with a 2 m cable and IP68 rating.
Non-flush mounting (unshielded) means the sensing face can be installed flush with surrounding metal without derating the sensing distance — the 8 mm range holds even when the sensor is embedded in a metal bracket. Switching at 2 kHz supports fast-moving targets like gear teeth or conveyor slugs; the M18 body and 2 m PVC cable handle typical industrial routing through cable trays or conduit.