Datalogic PowerScan RF Programming Manual page 162

RF Beeper
Frequency
156
Feature is specific to scanner ONLY
This setting affects the frequency at which the ACK beep is sounded,
and is independent of the frequency setting for the good read beep.
When the ACK beep is sounded at a different frequency than the good
read beep, this can provide a clearer distinction between the tones.
Select low frequency (760Hz), medium frequency (1250Hz), or high fre-
quency (2400Hz).
SET -------------------------------------------
RF Beeper Low
Frequency
RF Beeper Medium
Frequency
RF Beeper High
Frequency
END ------------------------------------------
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PowerScan
®
RF Scanner