Users should be very careful about their online security because of a worrying trend, and the trend is online scams. Pro Power Save is a scam. It seems that the scammers just change the name of the device as soon as they have discovered it. There is no device on the market now that can save 90% on your electricity bills. If this was so, then every news media would be talking about his product, especially now, when we're being asked to cut our carbon footprint.
The so-called comments or reviews displayed on websites selling Pro Power Save are fakes. They are there to trick potential victims into buying a product that does not do as advertised. If you want to reduce your electricity usage or bill, see the tips below.