1.1x8 Customer Pole Display LED Digital 2.English shows"PRICE","TOTAL","CASH","CHANGE"; ... 3.RS232 serial port or USB Port. 1x8 Customer Pole LED Digital Display Configuration: 1. Hardware configuration 1. Interface: Serial ... of Marketplace, Hospital,Airdrome, Station, Post, Bank etc. 1x8 Customer Pole Display LED Digital support RS232 serial port or USB Port.