4.3.6.4.
Brightness and backlight time
Click the icon to change value.
Brightness: Click the text to input new value and click the save config icon to save. Value
range is 10~63, default value is 63.
Backlight time: LCD backlight delay time, click the text to input new value and click save
config icon to save. Value range is 1~255, default value is 60.