... manufacturer and global wholesaler of large outdoor and indoor full color electronic LED matrix display screens, LED signs and LED ... response on all inquiries.This kind of LED 2R1G1B full color led display is appliled for displaying advertising, city beautifying, ... method Constant driving current Gray Grades 16384 levels for each color Display Color 4 , 398 , 046 , 511 , 104 Refresh Frequency ( Hz ) ≥ ...