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9
Gain Adjustment:
Control the Bluetooth audio gain when connected to the phone via Bluetooth only.
When connected to a mobile phone via phone 3.5, control the audio gain of the phone
3.5 interface.
Plug the 3.5mm audio head into the interface, it is recognized as connected to the
mobile phone.
4.5 HDMI
Provide HDMI connection instructions
4.6 Recording
Provide quick access to the recorder entrance. According to the recording and playback
conditions, determine whether the built-in microphone and built-in speaker of the device are
working properly.
Figure 4-2 Recording Software