An electrical connector is a device that joins two or more electrical circuits together. It allows for the flow of electrical current between the connected circuits and can be used to connect devices such as lights, motors, and batteries to a power source. Connectors can be classified based on the type of contact they use (e.g. pins, sockets, or blades), the number of circuits they connect (e.g. single- or multi-pin), and the type of connection they provide (e.g. temporary or permanent). There are many different types of electrical connectors available, each with their own set of features and specifications to suit different applications.