* Open Close
(2) pitch / loudness adjustment
When the barcode gun scans the following 002049 barcode, the
setting code will enter the corresponding frequency
Tone / loudness adjustment settings (range 1500-3000 Hz, default value
2700Hz)
1.4 Transmission mode (wired gun)
*USBHID PS/2
UART VCOM
1.5 Laser trigger mode
* Key trigger mode Pulse trigger mode