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.
Mounting and environment
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. Temperature range is -10°C to 55°C, which covers most indoor industrial floors but not freezer or outdoor direct-sun applications. 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.