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5
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8
1 Power switch: switches unit on/off
2 Headphone Output: 3.5mm output
Connect to earphones or headphones
3 Channel status LED: indicates selected channel
4 Channel switch: selects Channels 1-6
5 Volume control
：
Adjust the volume of headphone output
6 RF Status LED:
ON = Transmitter is on and link is established
Flashing = Signal connection interference
OFF = Transmitter off or unlinked
7 Power status LED: indicates power status:
Led off = 100% ~ 30%
Solid red = 29% ~ 11%
Flickering red = less than 10%
8 USB charging port
9 Antenna.
BASIC OPERATION
U4 RECEIVER
9
3
