An outlet, also known as a socket, is a device installed in walls that provides electrical power to appliances and devices. It typically has two or three holes where plugs can be inserted to connect to the electrical supply. Outlets are essential for powering everyday items like lamps, computers, and kitchen appliances. Outlets come in various types and configurations, depending on the country and electrical standards. Some outlets include additional features, such as USB ports for charging devices directly. Safety measures, like grounding and circuit breakers, are often integrated to prevent electrical hazards.