OPTISIM Burner Provides Excellent Simmering as Low as a 400 BTU Effect. Perfect for the Most Delicate Liquids and Sauces * Deep Recessed Maintop Captures Boil Overs and Spills for Easy Clean-up * Automatic Re-ignition * Centralized Front Controls for Easy Use * Low-profile Continuous Grates Provide a Versatile Platform to Work on, Optimizing use of Various Burner Sizes