The roda HEL4.0 video wall represents the continued development of HEL2.0, which has proven itself in harsh environments in various countries. The latest technologies have been adopted in the fields of computers, liquid crystal displays (LCDs) and data transmission. HEL 4.0 is the ideal device for visualizing decision data in stationary and deployable command posts. Thanks to its modular and installable design, the HEL can be equipped with a single screen or up to 4 screens at 65 "with 4k UHD resolution (3840 x 2160). The HEL-Commander operator software (video matrix ) allows the individual screens to be subdivided into almost infinite "picture-in-picture." The fiber connectors also allow for NATO 27 SDIP Level B (ER) zoning.