We no longer produce SDI cameras. SDI technology was quite popular in the CCTV in the years 2012/2013. The introduction of AHD high resolution analog cameras, much cheaper and more efficient than SDI, has made this technology obsolete. If you have purchased one of our SDI system and you have problems to find spare parts, do not hesitate to contact us: we will offer you excellent solutions to update your system to the latest technologies.