4.5 Other

Buzzer Setup	Turns the device sounds on or off, including the key sound and alarm sounds.
LCD Backlight	Always on, always off, or turn off after 15 seconds without operation.
LCD Contrast	Adjust the contrast value between black text and background from 1-10​ (the higher the number, the higher the contrast). The default value is 4​.
Version Info.	Displays device firmware and hardware versions.