This is the part you need when a guarding zone requires a through-beam array that stops the machine when the beam path is broken.
The manufacturer lists this part as active in production, so it remains a valid BOM line for new builds and replacement spares. No end-of-life notice is on record.
Packed in bulk, so expect loose units without individual retail packaging — fine for panel integration where you're mounting the emitter and receiver pair on guarding frames. The F3SJ series typically uses a 25 mm resolution profile, meaning it detects a 25 mm object (finger or hand) entering the field, which is standard for perimeter guarding per IEC 61496.