Capacity: A 20L microwave oven typically refers to its interior capacity, which indicates the amount of food or containers it can hold. This capacity is suitable for small to medium-sized households and is capable of accommodating standard dinner plates.

Power Output: Microwave ovens usually have a power rating measured in watts. Higher wattage generally means faster cooking times. A 20L microwave might have a power output ranging from around 700 watts to 1200 watts, though this can vary depending on the specific model and brand.

Cooking Features: Microwave ovens come with various cooking features such as preset cooking programs, defrost settings, and timer functions. Some models may also have additional features like grill or convection cooking modes.

Controls: Microwave ovens typically have digital or analog controls for setting cooking times, power levels, and selecting cooking functions. Some may also feature touchpad controls for easy operation.

Safety Features: Common safety features in microwave ovens include child lock functions to prevent accidental operation by children, as well as automatic shut-off mechanisms to prevent overheating.

Design and Construction: Microwave ovens come in different designs and finishes to suit various kitchen aesthetics. They are usually constructed with durable materials such as stainless steel or heat-resistant plastics.

Maintenance: Regular cleaning and maintenance are important to keep the microwave oven functioning properly and hygienic for food preparation. This includes wiping down the interior and exterior surfaces, cleaning the turntable, and checking for any signs of wear or damage.