What is the working principle of central locking?

[LaColeman]

Central locking works in two different ways depending on how the driver controls it, which are: 1. When the driver uses the key to turn the lock cylinder to unlock or lock, the unlocking or locking contacts in the door lock close, directly controlling the door lock to open or close. 2. When the driver uses the remote control to unlock or lock, the remote door lock receiver receives the signal sent by the remote control and transmits it to the central door lock control unit, which then controls the door lock to complete the opening or closing. Additional information: The central door lock system generally consists of a door lock control switch, a key-operated switch, door lock assemblies, a trunk opener, and a door lock controller.