What do the various audio tones represent?
| Audio Tone | Status |
Rapid ascending tone |
Powering on |
Rapid descending tones |
Powering off |
Four ascending tones |
Charger connected |
Four descending tones |
Charger disconnected |
Single tone |
Connected / disconnected call |
Two short tones when pressing Volume button |
Volume at minimum or maximum |
Two rapid ascending tones |
Connect successful/ FM transmitter on/ set preferred station/ mute enabled |
Two rapid descending tones |
Mute disabled |
High/low tones repeated every 60 sec. |
Low battery |
No audio indications; deteriorating quality |
Out of range |
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