What this cable connects
The Omron F39-JG20B-D is a double-ended cable purpose-built for the RX series safety light curtain. It links the emitter and receiver units to the control system, carrying both power and signal between the light curtain segments or from the curtain to the interface module. This is a sensor accessory, not a standalone cable — it is keyed to the RX connector interface, so the mating halves lock correctly and the shield continuity is maintained through the pair. The Box packaging indicates single-unit supply for replacement or initial install.