I bought two of these items. After the first failed I thought that I had connected to the supply incorrectly. After the second unit faied and I had confirmed polarity of the supply it was finally noticed that the units where for the US market and operated on 115V, unlike the Australian supply voltage of 240V. When I contacted "Amazon" whom I made payment to, they basically fobbed me of with the "we are just couriers". As I made money orders out to "Amazon" I that feel they are in some way responsible for after sales service. This has not been the case and now I get a survey to complete - get real eh. Support us or don't bother with these surveys. It just makes me more angry.good day.Eddy.