A Victron Autotransformer can be used to step up and step down between 240V and 120V and for split phase output balancing purposes. This is the perfect solution for poeple who are using products that are imported and exported between countries like the U.S.A who use 120V appliances, and countries like us in Australia who use 240V. 

While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention.