Cable joint is also called cable head. After the cable is laid, in order to make it into a continuous line, each section of the line must be connected as a whole, these connection points are called cable joints. The cable joint in the middle part of the cable line is called intermediate joint, and the cable joint at the two ends of the line is called terminal head. Cable connector is used to lock and fix the inlet and outlet lines, waterproof, dustproof and shockproof.