The protective height of 385mm and 18 beams on a 20mm pitch give it a sensing field that covers a 385mm vertical zone, with a maximum operating range of 7.0m. That range is the practical limit for the transmitter-receiver pair; the 0.2m minimum means you can't mount them closer than that to each other. It runs on 24VDC and is rated IP65, so it's dust-tight and handles water jets — fine for washdown areas in food processing or automotive lines, but not for submersion. Operating temperature spans -10°C to 55°C, which covers most factory-floor conditions but not freezers or ovens.
The F3SJ-E0385P25 is listed as end-of-life hot (EOL hot) by the manufacturer. Product status is Active. Confirm availability and lead time before committing the BOM line.
The 25mm detection capability is the key spec for safety distance calculations per ISO 13855. It determines how far back from the hazard the curtain must be mounted to stop the machine before a hand reaches the danger point. A 25mm detection zone requires a minimum mounting distance of about 300-500mm from the hazard, depending on the machine's stopping time. The 385mm protective height means the curtain covers a vertical span of 385mm — if your hazard zone is taller, you'll need multiple curtains or a taller model from the F3SJ-E range. The 18 beams at 20mm pitch give a resolution of 25mm (the beam spacing plus the beam diameter), which is the standard for hand detection. The 0.2m to 7.0m operating range means the transmitter and receiver can be up to 7m apart — fine for most machine guarding applications, but if your opening is wider than that, you'll need a different series with longer range capability.