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When in charging,the A B C D LED will flash orderly,
different LED flash indicate different battery volume.
you can judge according to the A B C D,for example
the A B LEDs are in solid green,the C LED is flashing,
it indicate the A B part is charged full and now is
charging C,in another words 50% battery volume is
charged,when battery charged full, the A B C D LED
will become solid green.
Channe LED Flashing after making pairs finished
The channel LED light flashing indicates there is signal
interference. Please switch to another channel, turn
off or stay away from other 2.4GHZ WIFI, to make
sure the U2 transmitter and receiver antennae be in
the signal receiving range.
Antennae angle
The rear end of O2 is the antenna, which can be used
at about an angel of 180°. The front signal of the
transmitter and the receiver is the strongest. Please
try to keep the front to face each other during using.
Do not block the antenna with your hand or other
items, and keep the signal within the receiving range
of the antenna.
When confront with interferrence from other devices
When in charging mode, the A B C D LED will flash
orderly with indicating the battery status. For example: If
both LEDs, A and B, are solid green and the C LED is
flashing, it indicates that 2/4 of the battery life is
charged fully and that it continues charging. In another
words 50% battery life is charged. When the battery is
fully restored, the A B C D LEDs will all become solid
green.
Channel LED flashing after pairing
If the channel LED light is flashing it indicates that there
is a signal interference. Please switch to another channel
and turn off or stay away from other 2.4GHZ WIFI
sources. Make sure the transmitter and receiver devices
are in a signal receiving range.
Antenna angle
The antenna is located at the rear end of the devices.
There the signal of the transmitter and the receiver is
the strongest. It can be used at about an angel of 180°.
Please adjust the devices so that the front of the
transmitter and receiver are facing each other during
usage. Do not block the antenna with your hand or any
other item and keep the signal within the receiving
range of the antenna.
