Thanks guys, I have sent an enquiry to them.
I actually have an ebay version of this at home that has never been used. We bought it about 8 years ago to use to wash horses after seeing a few units at shows. Not long after we bought it, we received an email form the government saying they are not legally able to be used in Australia and we could be fined/jailed for using one and there were safety issues. Put the fear of God into us and it has sat in the box ever since!!!