The Omron F3SJ-B1185P25 is a type-4 safety light curtain from the F3SJ-B series, rated for hand protection with a 25 mm detection capability. That 25 mm figure means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496-1 — making it suitable for guarding pinch points, press brakes, and assembly stations where operators reach in. It projects 58 beams at a 20 mm pitch across a 1185 mm protective height, covering a vertical area just over a meter tall. The operating range spans 0.2 m to 7.0 m, so it works in tight machine openings as well as across wider access points. Built with blanking and muting functions, it allows fixed objects (like a fixture or conveyor) to break beams without tripping the safety output, and can suppress the curtain during a material pass cycle. This is common in automated welding cells or palletizing stations where the load must move through the guarded area.
Where it lives on the line
Rated IP65 — dust-tight and protected against water jets — so it handles washdown environments in food processing or outdoor conveyor lines. Mounting brackets and alignment aids are typically ordered separately; the curtain itself ships in bulk packaging. Plan for a safety-rated controller or interface module (like the Omron F3SP series) to handle the OSSD outputs and integrate with the machine's safety relay or PLC.
No last-time-buy clock, no broker scavenger hunt. If you are specifying a new safety system, this model is still the manufacturer's active offering in the F3SJ-B family.