Got a vending machine, arcade cabinet, or kiosk that needs a reliable bill acceptor? This is a refurbished Conlux NBM 3100 series MDB bill validator. The cool part? It's been refreshed by a factory-authorized service center (so you know it's done right) and it accepts the newer $5 bills. Works with models like NBM 3110, 3120, 3130, and 3140. MDB is the modern protocol, so it should play nice with lots of newer machines. Seller notes they specialize in coin changers, bill acceptors, and control boards. It comes with a 90-day warranty for a bit of security. No UPC. A solid, cost-effective way to keep your cash-taking equipment running without buying a whole new unit.