What this light curtain does on the line
The Omron F3SJ-A1980P25-TS is a Type 4 safety light curtain from the F3SJ-A series, rated for hand protection with a 25mm detection capability. That 25mm figure means it reliably detects a human finger or hand entering the field — it's the spec that decides whether the curtain guards a hazard zone per IEC 61496-1. The 1980mm protective height and 20mm beam pitch (99 beams total) cover a tall opening, like a press or robot cell access point. Operating range is 0.2m to 7.0m, so it works in both tight machine guarding and longer-span perimeter setups.
Runs on 24VDC supply and carries an IP65 rating — dust-tight and protected against water jets, so it handles washdown in food or packaging lines without needing an extra enclosure. The blanking and muting function built into this variant lets you program out fixed obstructions (like a conveyor frame) and temporarily bypass the curtain during material pass-through — saves wiring a separate muting sensor pair.