The Omron E2E-X10ME2 2M is an unshielded inductive proximity switch with a 10 mm sensing distance, outputting NPN normally closed over a 2-meter PVC cable.
The 10 mm sensing range is rated for standard ferrous targets; unshielded construction means no metal-free zone around the face, so it can be flush-mounted in steel if the datasheet allows, but verify head-to-target material. Normally closed output means the switch opens when a target is present—useful for fail-safe wiring where a broken wire mimics an absent target, triggering the safety logic. DC 3-wire NPN output sinks current; confirm the PLC input card is sourcing (PNP compatible) or use a pull-up resistor.