credit card reader for RS800 vending machine

Description

Credit card reader for RS800 combo vending machine (may also work with other models). I really don't know a whole lot about these readers except they came installed on the machines and I have never actually used them. They power up and seem to do what they are supposed to do. I'll do my best to answer any questions but like I said I don't know much more than what I've stated. Don't know how to create account or set up. Thanks for looking.