How does the central door lock work?

The working principle of the central door lock is: the switching and locking process is completed through the conversion of the positive and negative power of the motor. The central lock is composed of two double-contact relays and a control circuit. When the unlocking signal is received , the unlocking relay pulls in, and the current passes through the motor from here to form a loop. Central door lock is the abbreviation of central door lock system, which consists of operating switch, control unit and actuator. The central door locking system includes door lock switches, door lock core switches, door lock motors, indicator lights, hood alarm switches, anti-theft antennas, control module receivers, remote controls, ultrasonic sensors, audible and visual alarm devices and other components.