The F3SG-4SRA1280-25 is a 25 mm detection-capability safety light curtain from the F3SG-SR series, built for hand protection across a 1280 mm protective height. It packs 64 beams at a 20 mm pitch, covering an operating range from 0.3 m out to 20.0 m. Supply is 24 VDC, and the enclosure carries IP65/IP67/IP67G ratings — dust-tight, water-resistant, waterproof, and oil-resistant, so it holds up in washdown or machining environments.
The 25 mm detection capability is the spec that decides whether this curtain guards hands or fingers — 25 mm is hand-level, not fingertip. That 1280 mm protective height and 64-beam count tell you the coverage zone: a single pair spans a 1.28 m opening. The 0.3 m minimum range means it can sit close to the hazard; the 20 m maximum covers longer access zones. Blanking and muting functions are built in, so you can program fixed or floating blanking zones for workpiece pass-through and set up muting sensors for palletized loads without an external controller.