SENA Bluetooth Mic Supplies Kit - Manual (Page 12)

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putting the Bluetooth Mic into pairing mode or
entering the “Configuration menu”. It is strongly
recommended for you to use headphones to
proplerly set up the system.
3.5 Volume Adjustment
You can easily adjust the volume by tapping
the (+) Button or the (-) Button. You will hear
a beep when the volume reaches maximum
or minimum level. The volume is set and
maintained independently at different levels
for each audio source even when you turn off
and on the Bluetooth Mic. For example, once
you set the volume for a paired mobile phone,
it will not change even if you adjust the volume
when you hear Bluetooth MP3 music. So you
can always maintain the preferred optimum
volume level for each audio source.
3.6 Using Internal/External
Microphone
Users may use either the built-in microphone
of the Bluetooth Mic (internal microphone)
or the microphone of a connected pair of
headphones (external microphone). According
to the application, you may use either one by
using the switching operation. Press the (-)
Button for 3 seconds and then the mode will be
switched to the one for internal microphone or
external microphone.
(factory default: internal
microphone)