for Plus 4, Serial RS232 (DB9) USB (standard) centronics (25 pin) module input 8-42Vdc.
This is a product that we do not sell online. This could be an OEM component, one we are restricted from selling on-line, or a product that has many variations and requires additional details.
It this for repairing an existing unit?
You can upload a picture of your current product for clarity