Waveshare Barcode Scanner Module User Manual page 21

Barcode Scanner Module User Manual
2. Scanned tone
With these code, you can set the buzzer behavior when succeed in scanning
barcode.
*Open Scanned tone
The time of the warning tone can also be set, it is default 60ms.
Tone time-30ms
Tone time-90ms
3. Decoding prompt
You can enable this function for MCU to know whether succeed in decoding. After
enable this function, module will send prompt character "F" if it failed decoding
and "S" if success.
*Don't output decoding
prompt
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Close Scanned tone
*Tone time-60ms
Tone time-120ms
Output decoding
prompt
Rev1.0 Date:180621