The Diggity Hot Dog machine (10 roller grill) has heat elements within the rollers, this enables them to heat and maintain the desired cooking temperature needed for the perfect hot dog. Dual heat and motor controls for front and rear rollers are adjustable. Cook time (depending on the size and type of hot dog or sausage) is approximately 15 – 20 minutes. This unit is great for any concession stand, school, convenience store, etc.