What is the correct setting to open a cash drawer on an rc Allen alpha1?

This is the third time you have asked. If no-one has responded, it is likely no-one knows.

You may get some mileage by doing your own Google searches.

I'd start with - say - "RC Allen manual" , possibly "Alpha 1 manual" and maybe "RC Allen Alpha 1" - you get the idea.

I believe this is a pretty old machine. You may come across some dedicated forums for this general kind of device, so ask there as well.

Acp
August 2017