... capability 3) High brightness 4)Good after-sale service Led Moving Sign Display Communication: RS232/RS485 com port, PC-USB ... , or Infra-red remote controland so on Outdoor LED Moving SignDetailed Product DescriptionLED Signs 1.Pixels: 4.75mm, 7.62mm, 10mm, ... 2.Display Color: Monochrome tri-color 3.Shops,schools,officesLED Signs Advertising, Retail Businesses, Event Listings, Waiting Areas, Hospitals, ...