Victron Color Control GX (CCGX) on right and the MT50 remote monitor on the left for monitoting the Ellies Solar Charge Controller. Difference in electrical current flow, is going to the 220V inverter. The CCGX is the heart of a Victron system, with all the Victron products connecting it, and in turn it transmits the data to the Victron cloud on the Internet. It also triggers the alerting.