What this light curtain does on the line
The F3SJ-A1180P25-TS is a Type 4 safety light curtain from Omron's F3SJ-A series, rated for hand protection with a 25 mm detection capability. That 25 mm figure means it catches fingers and hands reaching into a hazard zone — the standard finger/hand-protection threshold per IEC 61496. The 20 mm beam pitch and 59 beams give it a 1180 mm protective height, covering a wide access area like a press infeed or robot cell entry point. Operating range spans 0.2 m to 9.0 m, so it works for both tight machine guarding and longer perimeter setups. Built-in blanking and muting functions let it ignore fixed obstructions (like a conveyor frame) and automatically bypass during a pallet pass-through. That saves wiring an external muting controller.
The 25 mm detection capability is the key selection parameter: it's the smallest object the curtain reliably detects. For hand protection, that's the industry norm. The 1180 mm protective height covers a typical machine opening; if your hazard zone is taller, you'd stack two curtains or step up to a longer model in the same F3SJ-A family. If the curtain sits near an oven or in a refrigerated area, check the low end — it's fine down to -10°C.