Honeywell Xenon CCB01-010BT-BF Quick Start Manual page 11

Very Low Beeper (Nighttime Mode)
The following bar code silences the base, and sets the scanner
for a very low beep when reading bar codes. After scanning this
code, the base beep, base and scanner power up beep, and
scanner linking sounds are all silenced. When a bar code is
scanned, the scanner emits a very soft beep.
Nighttime Mode
Low Beeper (Daytime Mode)
Scan the following bar code to set all sounds to on, but at a low
volume. The scanner beep, base beep, base and scanner power
up beep, and scanner linking sounds are all set to low volume.
Daytime Mode
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