What does the central control door mean?

The central door refers to the door controlled by the central locking switch in the car. The central lock in the car refers to the switch on the driver's door, which is a control device that can control the whole door to close and open at the same time. There are many kinds of door lock controllers, which can be divided into three types according to the control principle: transistor type, capacitor type and inductive type. The basic principle of remote control of the central control door is that the owner sends out a weak radio wave, and the radio wave signal is received by the vehicle antenna, and the signal number is recognized by the electronic controller ECU, and then the actuator (motor or electromagnetic manager ring) of the system performs the opening or closing action.