... ignition,flame failure safety device for each controlHeavy duty gas burner with individual switch and thermostatAdjustable legsDevices are preset to city ... cap,easy to clean,fadeless.- Adopts fameout protection device with thermopile,piezo ilgnition or ignite burner by ignite gun ... difficult cleaning, the inefficiency in energy usage, and the high labor costs in using and cleaning the pos and pans ...