Motor caravan ovens range from a simple single control manual ignition unit to a full cooker unit. With more hobs without grills being produced a oven with combined grill have become increasingly popular. With the addition of thermostats, spark ignition and lights a low voltage electric supply has become needed. The full cooker units are now available with or without a pan door, 2, 3 or 4 burners with or without glass lid. some units have a 240 volt burner for use on mains hook-up and the grill can be combined with the oven or as a separate independent unit. Stainless steel or enamel frames are used with glass doors which are available in several colours.