A power extension socket, also known as a power strip or extension cord, is a device used to expand the number of available electrical outlets from a single wall outlet. It is a practical solution to conveniently power multiple electronic devices or appliances in areas where the number of outlets is limited. The power extension socket consists of a strip with several outlets and a power cord that connects to a wall socket.

These extension sockets come in various designs, ranging from basic models with a few outlets to advanced ones with surge protection, individual on/off switches for each outlet, and even USB charging ports. Some power extension sockets also feature safety features like overload protection to safeguard connected devices from voltage spikes.

Power extension sockets are commonly used in homes, offices, workshops, and entertainment areas to power computers, televisions, chargers, lamps, and other electrical devices. However, it's essential to use extension sockets responsibly and avoid overloading them, as this could pose a fire hazard. Regularly inspecting the cords and plugs for any signs of damage is also important to ensure safe usage.