The Tranz 330 is versatile enough to handle a variety of applications. The Tranz 330 transaction system lets you add new functions when your business needs change. The Tranz 330 system gives retailers a fast, low-cost way to authorize and process credit card sales and guarantee checks. It lets retailers accept debit (ATM) cards in payment, through an optional PIN pad. Plus, it supports other point-of-service (POS) applications involving the transfer of value, such as healthcare and government benefits programs.