The Omron F3SG-4SRA0600-25-F is a Type 4 safety light curtain from the F3SG-SR series, rated for hand protection with a 25 mm detection capability. That 25 mm beam pitch means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496-1, so it's suitable for access guarding around presses, assembly stations, and robotic cells. The 600 mm protective height and 20 m operating range cover a standard-sized opening without stacking multiple units.
Detection capability of 25 mm is the key spec: it defines the smallest object the curtain reliably detects — here, a 25 mm diameter rod or finger. That places it in the hand-protection category, not arm or body. For a 600 mm protective height, you get 30 beams at 20 mm pitch. The 0.3 m to 20 m operating range covers both short-reach machine access and longer perimeter zones; the 20 m max is useful for large gantry or conveyor entries. IP65/IP67/IP67G rating means the sensor body and optics withstand washdown — dust-tight, protected against temporary immersion, and oil-resistant. That IP67G variant is common in food-and-bev lines where caustic cleaning agents are used. The -30°C to 55°C operating temperature covers unheated warehouses and refrigerated environments without derating. Blanking and muting functions are built in: blanking lets you ignore fixed obstructions (like a machine frame) within the field, while muting temporarily suspends the curtain during material pass-through — both configurable without an external controller on this series.