... Areas, Financial Information, Corporate Communications, Railway station, Subway station and so on. Specifications : 1. Pixel pitch: 4.75mm, ... 20mm, P22mm ect. 2. Display Color: Monochrome or tri-color 3. Led color: Red, Amber, Blue, Red ect. 4. Communication: ... English or European characters or multi-language, graphic symbol and simple animations. Optional communication ways: 1. RS232/RS485 ...