The F3SG-4SRA0280-14-F is a type-4 safety light curtain from Omron's F3SG-SR series, designed for finger detection with a 14 mm detection capability — that means it catches individual fingers reaching into the hazard zone, meeting the finger-protection class per IEC 61496-1. With 27 beams spaced at 10 mm pitch, the protective height covers 280 mm, and the sensing range stretches from 0.3 m out to 10.0 m, so it works for both tight machine guarding and wider access areas.
The 14 mm detection capability is the key spec — it resolves a 14 mm object anywhere in the field, which is the standard for finger protection. That drives the beam pitch (10 mm) and the number of beams (27) to create a continuous detection plane. The 0.3 m minimum operating range means the curtain can be mounted close to the hazard, and the 10 m maximum gives you room for larger openings. Power is 24 VDC, which is standard for industrial safety circuits, and the IP65/IP67/IP67G rating means the sensor body and optics withstand washdown and oil — suitable for food-and-bev lines or machining centers where coolant and cleaning are daily.
This class of safety light curtain goes on machine tools, assembly lines, packaging equipment, and robotic cells — anywhere a person could reach into a pinch point or a cutting zone. The blanking and muting functions (onboard) let it ignore fixed obstructions (like a fixture arm) or temporarily bypass during a material feed cycle, so you don't need an external safety controller for those logic tasks.