The Omron F3SG-4SRB0200-25-F is a type-4 safety light curtain from the F3SG-SR series, rated for hand protection with a 25 mm detection capability and 20 mm beam pitch. It covers a 200 mm protective height using 10 beams, and its operating range spans 0.3 m to 20 m, making it suitable for guarding access to hazardous machinery where the operator must be detected before reaching the danger zone.
The 25 mm detection capability is the key figure for hand protection: it ensures that a 25 mm diameter object (a finger or hand) breaks at least one beam anywhere in the field. The 20 mm beam pitch and 10 beams give a 200 mm protective height — that is the vertical zone the curtain covers, not the total height of the emitter/receiver columns. The 0.3 m minimum operating range means the curtain can be mounted close to the hazard; the 20 m maximum covers long access paths. IP65/IP67/IP67G ingress protection means the housings tolerate hose-down washdown and temporary submersion, with the G variant adding oil resistance — important for machining or coolant environments.