1. Connecting Cash Drawer required a LAN receipt printer which equipped with a RJ12 connection port.
2. With cash drawer that supports MultiPRO interface cable, simply connect the cash drawer to the printer via RJ12 port, and once you have configured your receipt printer in FoodZaps Setting->Receipt Printer (), you will be able to open cash drawer from billing->"Open" or to pre-configure for auto-open from FoodZaps Setting->Payment Type
