The central control means that the door lock on the driver's side can control all door locks; the remote control key means that the door locks can be controlled by remote control; the anti-theft alarm means a device that can both prevent theft and provide warning; The remote control key is the core. It can control the central control and the anti-theft alarm device. The remote key does not need to be installed with an anti-theft alarm. Generally, the anti-theft alarm is controlled by the remote key.