Retail, Gift Shops, Convenience Stores, Beer/Wine/Liquor, Specialty Food, Produce, Meat, Main Street Merchants The traditional raised-key keyboard provides 21 keyboard PLU keys and can be expanded by your SAM4s dealer to 63 PLU keys. Keyboard PLUs act like traditional departments for open-priced entries or can be set as preset price keys. Large key size ensures easy-to read key labels. Merchants who wish to scan can build their PLU file on the fly using the notfound PLU registration feature. Using IRC (inter register communications), up to 8 registers can be connected for consolidating store wide reports and/or programming. Each RS-232C port can be connected to a phone modem or PC scanner, scale, remote printer, or remote pole display. Optional communications software can be used to upload or download register data directly from a PC, or via a phone modem. Daily transaction details, as well as sales and financial reports can be uploaded to your PC for storage and/or further review.