The Omron F3SJ-A2220P25-TS is a Type 4 safety light curtain from the F3SJ-A series, rated for hand protection with a 25 mm detection capability. That 25 mm figure means it catches fingers and hands reaching into a hazard zone — the standard finger-protection class per IEC 61496-1. The 20 mm beam pitch and 111 beams give it a 2220 mm protective height, so it covers a full access opening for a standing operator. Operating range runs from 0.2 m out to 7.0 m, which covers most machine-guarding distances on a production floor. Built-in blanking and muting functions let you configure it for pass-through applications — conveyor in-feeds where material needs to break the beam without tripping the machine stop, for instance. IP65 rating means the housing and optics stand up to washdown and dusty environments, so it's suited for food-and-bev lines or machining cells with coolant mist. Supply is 24 VDC, standard for safety circuits.
You can specify it into a new design or order it as a line-down replacement without worrying about a looming EOL.
The 111 beams at 20 mm pitch give you a dense curtain that minimizes dead zones between beams, so a hand moving fast still gets caught.