... Pole Display LED Digital 2.English shows"PRICE","TOTAL","CASH","CHANGE"; 3.RS232 serial port or USB Port. 1x8 Customer 2 digit led display support ... sets: ESC/POS. Send data to the serial interface for display, according to the system command details under the DOS or ... , Hospital,Airdrome, Station, Post, Bank etc. 1x8 Customer 2 digit led display support RS232 serial port or USB Port.