If you need to connect to a new Bluetooth device, please short
press the A or B button to enter Bluetooth pairing mode, then the
TX light will flash fast and the new device will be able to search
BT05: “Fosi Audio BT05”.
• Long press A or B button for 8 seconds to clear Bluetooth pairing
history, then pair Bluetooth headset or Bluetooth speaker again.
2. Get static noise under TX mode.
• Please use a separate or replacement 5V AC power adapter to
avoid signal interference.
3. There is no sound streaming under Bypass mode.
Bypass has 4 different modes (long press the [ ] button 2
seconds to select the correct audio cable connection).
• Aux 3.5mm In / Aux 3.5mm Out: only AUX lights on.
• Optical Input / Optical Output: only OPT lights on.
• Aux 3.5mm In / Optical Out: AUX, OPT and RX optical socket
lights on.
• Optical In / Aux 3.5mm Out: AUX and OPT lights on, RX optical
socket lights off.
4. Volume button not working.
• In RX mode, long press [+] to increase the volume, long press [-]
to decrease the volume; short press [+] to switch to the next
song, short press [-] to switch to the previous song.
• In TX and Bypass modes only works to adjust the volume.
5. Can it be connected automatically? I don't always want
to press the button twice.
• Yes. After the first pairing and BT05 restarting, BT05 will
automatically searching for Bluetooth devices that have been
paired.