A wall adapter is a device that converts electrical power from a wall outlet into a usable form for electronic devices. It typically plugs directly into the wall and provides a specific voltage and current needed for charging or powering gadgets like smartphones, tablets, and laptops. These adapters are essential for ensuring that devices receive the correct amount of electricity, preventing damage from overvoltage or incorrect current. Many wall adapters come with interchangeable plugs for different regions, making them versatile for international travel. They are often referred to as power adapters or chargers.