That 25mm figure means it catches fingers and hands reaching into the hazard zone — finger-protection class per IEC 61496-1, not just presence detection. The 1580mm protective height and 79 beams at 20mm pitch cover a wide vertical aperture, suitable for guarding large machine openings or conveyor access points.
Deployment context
Rated IP65 — dust-tight and protected against water jets — so it handles washdown environments in food processing, packaging lines, or outdoor material handling. The 24VDC supply is standard for safety circuits; the 0.2m to 9.0m operating range gives flexibility for both tight machine guarding and longer perimeter applications.
The product status is listed as active per the manufacturer's lifecycle record. For a safety light curtain on a BOM, that means the line is still supported — no last-time-buy pressure, no forced redesign. The F3SJ-A series includes blanking and muting functions, which are useful for allowing workpiece pass-through without tripping the safety output.