AHD Video Surveillance Security cameras, also known as Analog HD CCTV Security cameras, are capable of capturing HD video surveillance at 720p and 1080p. AHD CCTV is an analog HD CCTV video surveillance standard that uses coax cable to transmit HD video from cctv security cameras to DVRs. AHD supports 720p and 1080p HD video resolutions. AHD CCTV security cameras must be used with a AHD compatible Digital Video Recorder (DVR) . We install and supply hybrid AHD and CCTV DVRs that work with both AHD and traditional analog CCTV Security cameras.