Position and design: The mechanical switch for the rear physical door lock is usually located on the inside of the door, close to the door handle or under the door panel. It has a simple design and is easy for passengers to find and operate quickly in an emergency. Unlocking function: This switch is used to manually unlock the door mechanically when the electronic door lock system fails or the vehicle loses power, ensuring that passengers can leave the vehicle safely. Emergency handle: The emergency handle is usually combined with a mechanical switch. Passengers can directly unlock the door by pulling the handle. The operation is simple and intuitive, suitable for rapid escape in an emergency. Safety and reliability: The design of mechanical switches and emergency handles focuses on durability and reliability to ensure that they can still work normally in extreme situations to ensure passenger safety. Usage scenario: It is mainly used in emergency situations such as vehicle accidents, electronic system failures or battery exhaustion, providing a backup unlocking method to ensure that the door can be opened