Uniden UH-040XR - Manual (Page 15)

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 5secs after the last key is pressed.
KEYPAD LOCK
To prevent accidental entries, you can
lock the keypad.
Press and hold the [LOCK] button for
1.5 Secs until it beeps to activate Key Lock.
icon appears.
To unlock the keypad, press and hold the [LOCK]
button again for 1.5 Secs. icon disappears.
Note: When the Key Lock is active, a warning beep will be heard if you attempt to
press the keys.
MONITOR
This feature enables users to listen in for
weak signals on the current channel at the press of
a button.
To use monitor,
• For brief listening, press [MON]
• For continuous listening. Press and hold [MON]
for 2 sec. A two tone beep will be heard and
the receiver circuit will stay open, letting in
both the noise & weak signals.
• Display shows icons.
• To return to normal receive mode press [MON] ,
[SCAN] , [PTT] [
▲
] or [
▼
] .
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