The Omron F3SJ-B0785P25 is a Type 4 safety light curtain from the F3SJ-B series, rated for hand protection with a 25mm detection capability. That 25mm figure means it catches fingers reaching into the hazard zone — finger-protection class per IEC 61496-1 — so it is sized for access guarding around presses, assembly stations, and robotic cells where an operator's hands approach the danger point. The protective height is 785mm, covered by 38 beams spaced at a 20mm pitch. With a 0.2m to 7.0m operating range, this curtain suits medium-reach guarding where the transmitter and receiver sit a few metres apart — typical for a single-side access point on a machine cell.
Environmental fit and features
Rated IP65 — dust-tight and protected against water jets — so the sensor bodies and optics withstand washdown environments. That makes it viable for food-and-bev lines, packaging floors, or any area that sees regular hose-down cleaning. Built-in blanking and muting functions are available on this model. Blanking lets you mask fixed obstructions (like a conveyor frame passing through the field) without disabling the entire curtain. Muting allows the curtain to be temporarily overridden during a material pass cycle — a standard requirement for automated guided vehicle or pallet-transfer stations. Powered from a 24VDC supply, which is the standard control voltage for safety circuits in most panel designs.