I am familiar with this ISM band, 27 MHz heating and it is the wave of the future. Am trying to find a wholesaler who can supply them, but I no longer have a store. Bought a single burner one at Wall Mart for $58 and free delivery, model SR-964T Showed one to a customer and he was very impressed. They are more efficient and faster than gas or microwave and more versatile. Virtually impossible to cause a grease fire which is really important.