A brief history of the development of remote control keys

The first generation: The traditional mechanical key realizes the basic door switch function.
The second generation: You can lightly press the key shell button of the remote control to realize the opening and closing function of the car door, but a mechanical key is needed to operate the car. The two keys are used together, which is indispensable and somewhat cumbersome.
The third generation: Combine the functions of the key and the remote control into one. The door opening/closing/car starting are all completed by actively pressing the button on the key shell. The mechanical key is embedded in the remote control key for emergency needs.

The fourth generation: On the basis of the active button, passive working mode is added, and the door opening/closing action can be realized without pressing the button, which further improves the efficiency and greatly improves the safety performance.