This is a high quality AHD (Analog High Definition) Color Camera using the latest CMOS technology, which can produce a high definition image with little distortion. Analog High Definition is a high video definition standard, through the coaxial cable, using the analog modulation technology to transfer progressive scan HD Video Signal. AHD system is the same as traditional analog system, using common 75-3 coaxial cable to carry out as far as 500 meters HD video without any video signal loss.