HD SDI CCTV Apollo HD SDI DVR 18/04/2012 by blogadmin The new Apollo HD SDI DVR has now been officially launched. This 4 channel HD SDI CCTV package is capable of producing high quality images at 1080P using existing coax as its transmission medium. This keeps the installation simple and infrastructure costs low at the same time as providing HD images without the need to […] Read more » Apollo HD SDI DVR Dahua HD SDI CCTV HD SDI DVR