Introduction: The connector is CONNECTOR. Domestic also known as connectors, plugs and sockets, generally refers to electrical connectors, devices that connect two active devices to transmit current or signals. It is widely used in detection instruments, electronic instrumentation, electronic machinery, aviation, communications , navigation, computers, LED lamps, automobiles, construction machinery, electromechanical, transmission control systems, electrical electrical systems, industrial automation and other fields. The connector is an indispensable part of the electronic and electronic equipment. Its role is very simple in that the circuit is blocked or inaccessible circuits, and a communication bridge is erected so that the current circulates and the circuit can achieve the predetermined function. The form and structure of the connector are ever-changing. With different application objects, frequencies, and application environments, there are various types of connectors, and the waterproof connector is also adapted to the times.