Uniden UBC340CRS Owner's Manual page 9

Clock Display - the scanner, in standby mode, displays the time.
The clock also features an alarm that can sound up to 0 minutes or be
shut off manually. A convenient snooze button lets you silence the alarm
for an extra 5-minutes.
Delay - you can enable or disable the -second delay to resume
scanning when a transmission ends. Enabling this feature helps prevent
missing a response from one of the parties in the transmission.
LCD Backlight - you can enable or disable the LCD back lighted display.
Key Touch Tone - a tone sounds to confirm you have made a valid key
input while a different tone sounds to alert you to an invalid entry.
EEPROM Memory Backup - the scanner uses a non-volatile EEPROM
for memory backup.
Battery Alert - A battery icon alerts you to a no battery installed
condition, and a battery low voltage condition. An alert tone sounds when
the battery needs to be replaced. The backup provides backup for the
clock when power is off and will power scanning for a short time.
Auto Power Off - turns the scanner off when the battery power gets
too low.
Introduction
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