amohannadi

Hi, I had old AHD DVR and Cameras (brand: BRYAN Security) DVR Model: BR-U2108HD - Cameras are HD I am not expert on surveillance camera and would like to get your advise please to: - Upgrade DVR to either XVR or NVR (whichever is working with existing cables/wiring). - Upgrade Cameras for better/higher resolution view (FHD) - 2MP or above (Zoom, night vision). If you will help me with a link, it will be highly appreciated. Thank you in advance.