The Omron E2EGX5B1 is an M18 inductive proximity switch with a PNP normally-open output, rated for 24 VDC supply and 13 mA switching current. It detects magnetic metals at a 5 mm sensing distance, housed in a brass case with a PBT sensing face rated IP67 — meaning it withstands washdown and wet environments without sealing concerns.
The M18 barrel mounts in a standard 18 mm hole or bracket; the 3-wire cable exits the rear, so plan for a 5 mm minimum bend radius inside the junction box. IP67 allows direct mounting on a conveyor frame or washdown station without an extra enclosure.