The Omron E3A2-XCM4DG is a general purpose photoelectric sensor operating on a 240V supply with a 30ms response time, listed as the E3A2-XCM4D-G variant. It's the part you match to a BOM line requiring a reliable, mature through-beam or retro-reflective solution (sensing method not specified in the listing, but the output options and timing make it adaptable).
Key ratings for fit
The switching output is selectable between Light-ON and Dark-ON, so one sensor covers both normally-open and normally-closed logic without an extra inverter. Adjustable on-delay and off-delay from 0.1 to 5 seconds let you filter brief interruptions or stagger responses.