Sensor identity and form factor
The Omron E3FA-DP24-E016 is an M18 axial photoelectric sensor, meaning the optical axis is aligned with the barrel axis — a common choice for through-beam or retroreflective setups where the emitter and receiver face each other along a straight line. The M18 cylindrical body (18 mm diameter) fits standard mounting brackets and through-hole panels, simplifying mechanical integration into existing machine guarding or part-detection stations.