Retekess TT126 Manual página 10

2. Headphone volume adjustment: When the
screen is locked, press the "+" or "-" keys to
adjust the headphone volume. There are 9
levels of volume in total.
3. Channel adjustment: In the unlocked state,
press the "+" and "-" keys to adjust the number
of channels.
4. Microphone volume adjustment: When
unlocked, the mic button is used to adjust the
microphone gain, which can be adjusted from 1
to 7 levels. The higher the level, the wider the
range of sound collection, and the greater the
impact of environmental noise.
5. Unlock/lock screen: If you do not operate the
keys for 30 seconds, the screen will
automatically lock and the lock icon will be
displayed on the screen. After locking and
continuing without operation for 30 seconds,
the screen will turn off without affecting normal
use. When a key is pressed, the screen lights up
again. When you need to unlock, press and
hold the lock button for 3 seconds to unlock.
6. Call mode: There are 2 modes in total, ①P
mode: press and hold the call button to speak,
release to exit the call mode ②S mode: press
the call button to speak, press again to exit the
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