The Omron EESX954R1M is a transmissive photomicrosensor from the EE-SX95 series — a slot-type (fork) sensor with an infrared LED emitter and NPN phototransistor receiver aligned across a 5 mm gap. When an opaque object passes through the slot, it interrupts the beam, and the NPN open-collector output switches. The supply range is 5 V to 24 V, and the output sinks up to 50 mA. That 50 mA limit means it drives a PLC input or a small relay directly, but not a contactor coil — keep the load within that ceiling.
Switching logic and wiring
The sensor supports both Light-ON and Dark-ON modes — you select the logic by wiring the load to either the normally-open or normally-closed output transistor. The pre-wired cable (about 2 m on this series) terminates in bare leads, so it lands directly in a terminal block or PLC input card. No connector to source, no crimping. The NPN output is common for Asian-origin PLCs and older DC input cards; if your control system uses PNP (sourcing) inputs, you'll need a level shifter or a different sensor variant.
Environmental limits and enclosure
Rated IP50 — dust-protected but not sealed against moisture. That's fine for a dry cabinet or a pick-and-place station inside a guarded cell, but it won't survive washdown or outdoor exposure. If your line sees condensation or coolant splash, you'll want a sensor with an IP67 or IP67G rating instead.