Omron F3SG-4RA0905-25-01TS Light Curtain, Active

The F3SG-4RA0905-25-01TS: Ships in a Box package, which for this class usually means the emitter, receiver, and mounting brackets are in one carton — no piecemeal sourcing. The series field is a placeholder, but the part number itself tells you it's a 4-beam, 905 mm protected height unit with a 25 mm resolution, Type 4 safety rating. That resolution keeps fingers out; the 905 mm height covers a standing operator's torso zone.