Audio Tones
Headset status The audio tone
Power on 2 tones from low to high
Power off 2 tones from low to high
Pairing success 1 single tone
Switch to first device 1 single tone
Switch to second device 2 single tone
Battery low 5 rapid high tones once per 20 seconds
No network service 2 rapid high tones once per 20 seconds
Microphone muted 1 low tone once per 5 seconds
Turn on the audio gateway 4 tones from low to high
Turn off the audio gateway 4 tones from high to low
Long press the MFB 1 single higher tone
Connect success 1
stDevice: 1 single tone
2rd Device: 2 single tone
Any headset connect failed 2 rapid lower tone per 25 seconds continued 120 seconds
Max./Min. Volumes 1 single high tone
FCC Notice To User
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
This device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation. See 47 CFR Sec. 15.19(3).
If your mobile device or accessory has a USB connector, or is otherwise considered a computer peripheral device whereby it
can be connected to a computer for purposes of transferring data, then it is considered a Class B device and the following
statement applies:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
