Operation
Back Lighting
The Liquid Crystal Display (LCD) is backlit for easy viewing at night or in
low light situations. The back lighting automatically switches ON every time
a key (except PTT) is pressed. It turns OFF 5 seconds after the last key
is pressed.
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Handheld UHF-CB Transceiver
Keypad Lock
To prevent accidental entries, you can lock the keypad.
Press and hold
[S]
repeatedly to cycle through the Smart Key modes
until the
appears.
To unlock the keypad, press and hold [S] again for 1.5 seconds.
The
disappears.
NOTE
Voice Enhancer (EQL) Setting
UNIDEN UH810S/UH820S
When the keypad Lock is active, an error tone will be heard
if you attempt to press any key, except for the following key
function;
(PTT).
Choose from 4 different receive audio level settings to provide a natural
Voice Enhancer for super clarity and performance.
Press
[S]
, when in Smart key EQL mode, to change the setting between;
Off(Normal) /L1(Bass) /L2(Midrange) /L3(High)