Text LED display Model D4 is one of the most popular devices. It is often installed in the shop windows or as a device built-in into another advertising medium. In its standard version, the device has a built-in clock, a calendar and an electronic thermometer.
| Width | 130 cm |
| Height | 25 cm |
| Thickness | 3 cm |
| Number of letters | 610 |
| Resolution | 88x16 (1408) |
| Weight | 3,7 kg |
| Power consumption | 14W |
| Control | keyboard USB |
| Available LED colours |  |
