The F3SJ-B0785P25-01TS: Packaging is listed as bulk, meaning it ships as a single unit in a plain box rather than a retail hang-card or multi-pack. For a safety light curtain this is the standard industrial format — the sensor pair, cables, and mounting brackets come together as one orderable assembly.
A safety light curtain of this class mounts across a machine access point — typically a press brake, robotic cell, or packaging line infeed. The emitter and receiver columns are aligned to create a protective field; the control unit (often integrated into the receiver) outputs two OSSD safety signals that feed into a safety PLC or safety relay. The F3SJ series is a standard form-factor in Omron's safety lineup, so replacement of an existing F3SJ unit with this order code is a direct swap on the same mounting brackets and cables.