MEI has a lot of Billacceptor models with various functions, abilities and way they treat bills you insert to pay for service that machine they are in is providing.
Depending on series and model they can be Upstacker or Downstacker
Depending on series, they can accept range of bills from $1 to $20 bills.
They can work on 12v, 24v or 110v, and they can support various bill casette capacity, from 300 bills to 1000 bills.
You can see more in original MEI manufacturer brochure we will provide on bottom of this article.