In RadioLink T8S&T8FB APP save model button and load model button are the features of this APP. The save model button function is to make the T8S remote controller produced by RadioLink of our company save the user's requirements for different UAV parameters when controlling different UAV. The function of loading model button is to allow users to swipe into the saved parameter files corresponding to different drones when using the T8S remote control of the company so that users do not need to readjust the parameters. RadioLink T8S&T8FB APP will store a basic model file in advance so that when the user changes the parameters too large or too small to be used in the UAV the original model parameters will be returned. The Bluetooth connected by this app is a specific Bluetooth module which is the internal Bluetooth module of the T8S remote control of radiolink of our company. Data can only be read and written if the correct Bluetooth module is connected.