led programming sign display 1.SD-P16-RGB-4x2 2.Control:RS232/ ... :Cree, Silan 4.1/4 scan Poosled Good Quality led programming sign display Able to show text, message,numbers,date,time ... , countdown and any other odditional functions like temperature and humidity. Voltage input: 220v or110v.5) Structure: well appreance frame, professional pendents ...