What the ratings mean for fit
The Omron E2F-X1R5E2 is an M8 threaded cylindrical inductive proximity sensor with a shielded sensing face, rated for 2 mm maximum sensing distance and a water-resistant IP68 enclosure. Shielded construction means this sensor can be flush-mounted in metal — drill a hole, countersink the head, and it detects the same 2 mm without derating. If you need non-flush (unshielded) for longer range in plastic, look at a different variant; this one is for tight metal installs. Output is NPN normally closed (NC). With no target present, the output is pulled low to ground; when metal enters the 2 mm zone, the output goes high-impedance (opens). That's the classic fail-safe wiring for conveyor jams or valve position — if the wire breaks, the PLC sees an open and can react. Verify your input card sinks current NPN style. Runs on 10-30 VDC, sinking up to 200 mA. That's plenty for most PLC zones or DC relays. The 3-wire prewired cable is 2 meters long with bare ends, so you'll need a terminal block or ferrule connector inside your cabinet. IP68 and the polyarylate resin body handle washdown up to 1 meter submersion, but not pressure washing at close range — check if your environment calls for IP69K.
Installation notes
M8 threaded body, 30 mm overall height. Shielded so it can sit flush in steel or aluminum. The 2 m cable exits the back, 3-wire: brown (VCC), blue (GND), black (NPN output). Strip about 8 mm and land in a terminal block. Indicator light on the top shows target presence — handy for commissioning. Use a standard M8 lock nut (not included) to fix it in the bracket. Operating temperature range from -13 to 158 °F; NEMA 1, 3, 4, 6, 12, 13 cover dust and washdown, not hazardous locations. Keep the cable gland sealed to maintain the rating.