Barcode scanner is either a Honeywell N5680 connected via serial, or a CODE CR8200. The nx application will apparently translate some Honeywell responses to Code responses, depending on hardware.

https://codecorp.com/products/code-reader-8200/

https://automation.honeywell.com/us/en/products/productivity-solutions/barcode-scan-engines-and-modules/2d-barcode-scan-engines/n5600-series-2d-standard-scan-engine

The barcode scanner is on /dev/ttyUSB0 at 115200 8n1, and is programmed by default to output just the QR code over serial with no CRLF. Setup scripts create /dev/ttyS5 as a link to /dev/ttyUSB0.

stty -F /dev/ttyUSB0 115200 cs8 -cstopb -parenb -ixon will set up the serial port with the correct parameters. If you have the CODE CR8200, echo -e "CDOPPMD0\r\n" > /dev/ttyUSB0 will disable the lights as well as code scanning.