In the RadioLink T8S&T8FB APP, the save model button and the load model button are the features of this APP. The function of the save model button is to enable the T8S&T8FB remote controls produced by RadioLink of our company to save the user's requirements for different drone parameters when controlling different drones. The "Load Model" button function is designed to allow users to simply flash in the corresponding saved parameter files when controlling different drones with our company's T8S remote control. By using "All File Permissions" to back up and restore the model files, users no longer need to readjust the parameters. The RadioLink T8S&T8FB APP will store a basic model file in advance so that when users modify parameters, if the modification is too large or too small and is not applicable to the unmanned aerial vehicle, the original model parameters can be restored. This app is connected to a specific Bluetooth module, which is the Bluetooth module inside the RadioLink T8S&T8FB remote control of our company. Only when the correct Bluetooth module is connected can data be read and written.