Product review (1 stars): Poorly engineered
We bought one of these six years ago.  Last week it "popped" and went dead from a short circuit on the circuit boards.  No replacement part can be found.  Have to order a 601 model control frame (ours was a 600).  Oops, the 601 is not compatible with the touch top of the 600.  Oops, the 601 also needs a new control board.  Total cost was about $1,300 in parts and labor.  We opted to just buy a new coil electric cooktop instead.  An electric coil or gas cooktop will last for decades without costly repairs like this.  This is basically a computer.