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A smart plug is a power plug which can be fitted between power cords and sockets to function as remote
controlled power switch. As such, smart plugs can be used to make "dumb" electrical equipment "smart" and
thereby enable such devices for home automation or building automation purposes.
Smart plugs can for example be controlled via a mobile application, a smart home hub or a virtual
assistant. Examples of protocols used for communication with smart plugs include Wi-Fi, Bluetooth,
ZigBee and Z-Wave. Many smart plugs have a built-in ammeter so that electric energy consumption
(measured in kilowatt-hours) of the connected equipment can be monitored. Smart plugs often need to
have a slim profile in order to not covering and preventing access to neighbouring sockets in a wall
socket or power strip.