This is a Coinco BA32SAB dollar bill acceptor / validator. The Coinco BA series continues to be the work horse of the industry. Accepts $1 bills only. Has a dual interface, 24 volt Mars serial interface (standard Mars 9 pin plug and 18 pin data socket) and MDB interface. These units have been completely disassembled, cleaned, rebuilt with brand new belts, and calibrated. We stand behind all of our sales with a 90 day limited warranty.