The Omron E2ES05S12CJB103MOMS is an M5 cylindrical inductive proximity sensor from the E2E series. It detects ferrous targets up to 1.2 mm away in a flush-mount configuration, meaning it can be embedded in metal without derating the sensing range. That 1.2 mm gap is tight — you're looking at small-part presence, end-of-travel on a miniature actuator, or counting on a feeder track. The 4 kHz switching frequency keeps up with fast-moving parts on a pick-and-place head or a rotary indexer.
The 5 mm square body (5 mm width, 5 mm height, 25.1 mm overall length) fits into tight spots — think end-of-arm tooling, valve-block mounting, or a cramped die set. The flush-mount housing is stainless steel, so it shrugs off weld splatter and washdown. IP67 means it survives hose-down cleaning in food or wash-down zones, but the M8 connector end needs to be mated properly or sealed. Output is PNP normally open, 100 mA load max, running on 10–30 VDC with a 10 mA no-load draw. That's standard for a PLC input card — no surprises.
The 300 mm pigtail with an M8 male plug means you can pre-wire a harness and swap the sensor without opening the panel. The M8 connector is common on small sensors — mates to standard M8 cordsets. The 15% repeat accuracy means you'll get consistent detection at 1.2 mm, but don't push it to the ragged edge; leave a little air gap for mechanical tolerance. The stainless barrel and flush mount let you drill a 5 mm hole and drop it in — no counterbore needed.