The Omron F3SG-4RE1790P30 is a Type 4 safety light curtain from the F3SG-RE series, built for hand/arm detection with a 30 mm detection capability. That 30 mm figure means it catches a finger or hand reaching into the hazard zone — the standard finger-protection class per IEC 61496-1 — so it suits press brakes, assembly stations, and robotic cells where operators reach into the guarded area. The 1790 mm protective height and 20 mm beam pitch (88 beams total) define the guarded plane: 1790 mm covers a tall opening, and the 20 mm pitch ensures no gap larger than 30 mm between detection zones. Operating range spans 0.3 m to 20.0 m, giving flexibility from tight machine guarding to wide conveyor access points. IP67 ingress protection means the sensor housing and optics withstand washdown — suitable for food-and-bev lines or machining centers where coolant spray is routine.
Mounts to standard extruded-aluminum brackets or Omron mounting hardware; the 20 mm beam pitch and 88 beams define the optical plane. The 24 VDC supply connects to a safety-rated power supply and a safety controller or relay (e.g., Omron G9SB or similar). The 0.3 m minimum range means it can be placed close to the hazard without blind spots. IP67 allows direct washdown — no additional enclosure needed for most wet environments.