A few signs in this school sign system include a full-colour LED sign, a single-colour LED sign plus a map sign and gable sign. Electronic signs can display text, numbers, graphics, animated gifs, jpegs, bmp, tifs and png files. Full colour screens support most digital video and image formats. Messages on digital signs are changed from anywhere at any time using the mobile device of your choice. Changing your LED sign will take as much time as it takes to read this sentence.