The HDCVI technology has been developed by the DAHUA company, which allows the transmission of tribute to the stand up to 1200m (720p), 800m (1080p) and 700m. (4MP / 4K), as well as a coaxial cable, or up to 450 with a victorian twisted bet. Special technology є transmission of up to 4 signals on one cable (data, video, audio, live). Garné solution for upgrading the old system and video surveillance without replacing the cable.