④ 【AUX】: After selecting this mode, the AUX output mode will be turned on by
default. Use the AUX sound source cable to connect the smart screen to the original
car. After the connection is successful, all the sounds of the device will be transmitted
to the original car speakers through the AUX sound source cable for playback.
After selecting this mode, the volume icon will change to the AUX output icon【 】,
and the volume cannot be adjusted on this device, so the volume must be adjusted on
the original car.
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