Experience 4K video surveillance with the simplicity of reusing existing coaxial infrastructure! The AVS-D8712SL-DP camera adopts a powerful 1/1.8'' imager as well as a varifocal 3.7-11mm motorized zoom lens, providing superior quality imaging. It also supports Starlight technology and 120dB true WDR for a clear image in even poor lighting conditions. In addition, this camera supports an Audio Input for an external microphone to capture broadcast quality audio and improve supplementary evidence collection. Ultra high definition and a complete set of features makes this 4K HD-AVS camera an ideal choice for mid to large-size businesses and projects where both highly reliable surveillance and construction flexibility are demanded.