The F3SJ-A1020N30 lifecycle status is eol_hot; official product status is Active. Bulk packaging ships the emitter/receiver pair in a single carton.
As a safety light curtain, the key decision point is the protected height and resolution — the F3SJ-A1020N30 guards a defined area, and the 30 in the suffix typically indicates a 30 mm resolution, which catches fingers and hands (finger-protection class per IEC 61496-1/2). That matters when you are retrofitting an existing machine: the curtain must cover the full opening, and the resolution determines what size object trips it. No point swapping the old guard for one that lets a hand through before it stops the press.