What this cable connects
The F39-JGR3M-B58L is a dedicated interconnect cable that links the transmitter (TX) of an F3SJA or F3SJB safety light curtain to the TX of an F3SG-RA series light curtain. This is a specific-purpose cable, not a generic M12 or pigtail — it carries the pinout and shielding required to pass the emitter control signals between the two curtain families. It ships in box packaging.
Because this cable mates specific Omron safety light curtain models, the fit is binary: if your line uses an F3SJ-A/B emitter and an F3SG-RA emitter, this is the correct harness. No generic substitute will carry the same connector keying or wire assignment.