fiodio 15K3F-C - Key Control Method for Menus

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After the main menu appears, adjust the Up and Down keys to select the desired function
· Switch between the Up and Down keys to switch among options.
· Press the power key to enter the next menu, and long-press for 1s to return to the previous menu.
· The window disappears after 3s later when there is no operation.
Ringer mode
· Switch between the Up and Down keys to switch among options.
· Press the power key to enter the next menu, and long-press for 1s to return to the previous menu.
· The window disappears 3s later when there is no operation.
Color temperature
· Switch the Down key to switch among options.
· Press the power key to enter the next menu and long-press for 1s to return to the previous menu.
After selecting a function (as shown below), press the Up and Down keys to adjust the function.
· The window disappears 3s later when there is no operation.
Home page
· Switch the Down key to switch among options.
· Press the power key to enter the next menu, and long-press for 1s to return to the previous menu.
After selecting a function (as shown below), press the Up and Down keys to adjust the function.
· The window disappears 3s later when there is no operation.
Luminance: Press the Up and Down keys
to adjust the luminance.
Contrast ratio: Press the Up and Down keys
to adjust the contrast ratio.
Sound: Press the Up and Down keys
to adjust the sound
2. Key control method