Product review (2 stars): Advertised as 230 volt but only has room for 110 volts in electrical box.
The product description for this cooktop says that it is 230 volts both on the Amazon site and in the paperwork that comes with it. When it arrived, the electrical box in the cooktop only has room for a ground, a neutral and one hot wire which means that it can only be wired for 110 volts.  I thought that the price was really good when I was price comparing to other 220 volt cooktops, but in reality this unit is only half as powerful.  I installed the unit in a rental (and didn't have the time to return it and buy a 220 volt unit) and I have not used it, so I can't comment on its functionality.