The RCRGN-150-2 is a proprietary internal BUS cable designed to link components within the Carlo Gavazzi NRG system. This 5-way cable has a length of 150cm and is terminated at both ends with a micro-USB connector. It is engineered to carry the +24V supply, ground, RS485 communication data, and an autoconfiguration line between devices. The cable physically connects an NRGC controller to an RG..N solid state relay or links multiple RG..N relays together. It is an essential component for establishing the internal BUS, enabling communication, power distribution, and the autoconfiguration of solid state relays.