①Press the display panel buttons at the same time for “Speed” and “Volume”. After 3 seconds, enter the user settings.

②Press “Add” at this point to switch to system settings. Press “Remote” at this point to toggle settings options.

③Menu 7：Sound settings

④Press “Add” and “Subtract” at this point.

⑤Adjust sound options：0-2（00：No throttle sound, no square sound、01： There is a throttle sound effect , there is a square sound effect、02：There is a throttle sound effect , no square sound effect、Recommended parameters：7-1）

⑥Once set up, it’s done. Press “Speed” and “Volume” at the same time to exit the settings interface.