I ordered this to use on a yacht in Greece that had only cigar lighter sockets, there were no three-pin or even two-pin sockets on the boat. This adaptor worked well and I was able to charge our iPhones on it and used it plug in a mosquito repeller machine at night. My iPod worked on it too. I haven't tried using it for anything else. I was told I couldn't use it for a travel hairdryer or hair straighteners or anything that gives off heat, so didn't try using those in order to avoid overloading it and potentially ruining something. Overall it worked well for the other appliances and wasn't noisy while in operation, so I'm pleased with it so far.