Boss Audio Systems 840UBI User Manual page 11

BEEP ON/OFF ( Beep Tone
The beep tone feature allows the selection of an audible beep tone to be heard each time a
button is pressed on the face of the radio. "BEEP ON" is the default display. Rotate the Encoder
Volume Knob (Press the volume up/down button) to select the "BEEP OFF" option.
BTRF (Bluetooth Radio Frequency)
Under the Bluetooth On mode, user can get into the System Menu to view the Bluetooth signal
intensity, the signal ranging from 00 (weakest) to 50(strongest).
If the Bluetooth signal is weak, this will affect the Telephone call or Audio Streaming
sound quality.
INFO SYS ( System Information )
Once into the System Information mode, press the Audio button to view the details system
software informations of this unit.
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