Since I have a Schneider XW-Pro, I had no choice but to use the Gateway to configure the system. It does work fairly well, but it will only monitor Schneider devices. You will be able to see your battery voltage, but it will not show you the charging current from the Outback MPPT. You will get basically the same information from a Schneider Combox if you can still find one. That should be a fair bit cheaper than the Gateway, but it is being discontinued. The Gateway in the new replacement. It has a lot of "room" for new features if they decide to add to it. But for now, a lot of them are not being used yet.