It refers to the various power levels in the microwave. Different types of foods require different temperature levels to cook.

It allow you to cook different kinds of foods at different temperature intensity levels. Currently, microwave ovens have variable cooking power levels ranging from 5 to 10.

Having more power levels is helpful.

Multi-stage cooking is a feature available with microwave ovens that enables cooking at different power levels during different stages of the cooking cycle.

Some recipes require different temperatures of heat during each stage of cooking. Microwave ovens with the Multi-stage cooking feature can be programmed to automatically cook at different power level during different stages of the cooking cycle.

In a regular microwave oven, one would have to keep monitoring and changing the power level at regular intervals to suit the recipe. This feature allows the cook to punch in the power levels and time durations at the start of the cooking cycle and then return to find the preparation ready.

You have to thaw frozen food, before you can cook it. Auto defrost in microwave is a mechanism which can automatically thaw frozen food.

There are two ways in which a microwave oven thaws frozen foods: by weight or by time.

Defrosting by weight is easier and faster than defrosting by specifying a time.

Child Safety Lock is an electronic lock that prevents misuse or accidental operation of the microwave oven by children.

There may be a code that has to be entered to unlock the microwave or an electronic command that prevents the oven from operating.

This feature prevents unauthorised and unsupervised use by children or servants thanks to an electronic code.