What it is and what it does
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.
Key ratings and what they mean for fit
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.
Mounting and wiring notes
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.