I have a European 220V 50hz boat and do not want a Multiplus II to pass through 60hz when I am at marinas where the available 220V is 60hz. This can cause malfunction of my microwave and clothes washer and is not optimal for my AC. However, I do like that the Multiplus II can provide both battery charging and function as an inverter. I have been told that you can use MK3-USB to configure the Multiplus II to disable the pass through, but I cannot find this described in the Victron manuals. Can anyone tell me where this configuration is described?