Finally, 4K resolution is available for surveillance cameras over Coax! The new AVS-4K series of cameras all produce stunning 4K video at 15FPS. The AVS-4KD8021-IR is an 8MP Day/Night bullet camera with a fixed 2.8mm lens, supporting 164' of intelligent IR illumination. Supporting both HD and SD output, this camera can be used for retrofit as well as green field installations. Typical applications for this type of camera include: businesses, interior/exterior residential applications, parking lots and gas stations. Like all HD-AVS cameras from IC Realtime, a compatible HD-AVS recorder is required to provide HD video transmission up to 2,296' over conventional Coaxial cable.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.