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.Note:For compatibility purposes, this camera may come default on 4MP/ 2MP resolution. When equipped with an appropriate HDVR, you can set the camera to the maximum resolution via the OSD interface.