Product review (2 stars): I wasn't aware that this only works for certain types of metal pans.
Appears to only work with our cast iron pans that we own.  The problem I also have is that heat management is very tough and you really have to  babysit as this goes from zero to burn very easily. I wish it would have a dial and work with all metals. I thought this would work just like our flattop electric stove..