LCD Display: 480*234 pixels (7inch), 26 function keys, support RS232, RS485, with indication lamp on frontal cover Easy to edit the screen, rich functionsLCD: 7 inch 256 colors touch screen, 480*234 pixel, use life can up to 500000 hours26 function keys, user-defined functions, the keys are precise and sensitiveTwo communication ports, strong communication functionsReplaceable panel and ...