Waveshare Barcode Scanner Module User Manual page 20

Barcode Scanner Module User Manual
You can set the buzzer to active/passive buzzer, as well as setting the driving
frequency of passive buzzer.
Driving frequency-
Passive LF
Driving frequency-
Passive HF
Note:
LF: Low frequency;
MF: Midium frequency;
HF: High frequency
In active driving mode, user can set the working level of buzzer.
*Working level-
High
User can turn off all the warning tones by use the code "Enable silence".
Enable silence
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*Driving frequency-
Passive MF
Driving frequency-
Active
Working level-
Low
*Disable Silence
Rev1.0 Date:180621