When the beam array is interrupted, it sends a stop signal to the machine control circuit, protecting personnel from reaching into pinch points, presses, or robotic cells.
The F3SJ-A1100P25 is a safety light curtain, which means its key fit parameter is the detection zone dimensions and resolution — the beam pitch determines whether it catches a finger (14 mm) or a hand (30 mm) reaching into the hazard. This model's exact specs aren't detailed in the available data, but the series designation (*) and the EOL Hot status are what matter for sourcing: confirm the protective height and resolution against your application's risk assessment before committing. The Bulk package means it ships as a loose unit, not on a reel or in a multi-pack. For a field-service swap, that's fine — it's one unit in a box, ready to mount on the guarding brackets.