Android device changed from FZ-B2 to FZ-L1, but bar code reader specification changed and implementation method is unknown

As you can see in the title, the bar code reader's specifications are different when replacing a new terminal.
Currently, it reads one character at a time, while the new terminal reads all at once.

The new device has information such as SDK, but currently there is no information about SDK on the Internet, so I don't even know if it's being used.

I'd like to ask you some tips and opportunities.

Android version: 6.0→8.1

Toughpad FZ-B2 | Corporate Computer | Panasonic https://panasonic.biz/cns/pc/prod/pad/b2/

Toughbook FZ-L1 | Corporate Computer | Panasonic https://panasonic.biz/cns/pc/prod/pad/l1/

Let me borrow your wisdom.
Thank you for your cooperation.