The Induction Plate Activator is ideal for room service or for any situation that requires a hot plate. Fast even heating ensures that all plates are the same temperature. The charger is manufactured in the United States and has a stainless steel housing exterior that is constructed of 18-gauge 300 series stainless steel. The top surface is made of scratch resistant high impact polycarbonate. To ensure consistent plate temperatures the unit is supplied with a built in heat sensing device that is factory set at a range of 190 to 200 degrees.