What the class does — deployment context
The F3SJ-A0635P20-TS: Safety light curtains of this class are mounted at the point of entry to a hazard zone — typically a press, robot cell, or packaging line. They replace physical guards or interlocked gates where frequent operator access is needed. The F3SJ series is designed for Type 4 (highest) safety integrity per IEC 61496-1, meaning it can be used in control-reliable safety circuits up to SIL 3 / PL e. The sensing range and resolution (not specified in this listing) determine the minimum object size it detects and the maximum separation distance from the hazard.