It is usually divided into three-control automatic type (timing, temperature regulation, power regulation), temperature control timing type and ordinary simple type. Temperature control timing type is enough, because this type of function is more complete, cost-effective, three-control automatic type, all kinds of baking functions, but the price is more expensive, ordinary simple type is "entry-level" products, this type of product price is cheaper, but because the temperature and time are manual control, the user needs to carefully grasp the fire, Avoid food "sandwich" or excessive baking, affecting the delicacy.