Need aHikvision 4K, 8MP ColorVu with audio ?. High-quality imaging with 5MP (2560×1944) resolution. Sensor: 1/2.8″ CMOS (5MP max: 2592×1944). (Model: UKVISION-5MP-3K-AOC with built-in microphone). Audio Over Coax (AOC): Built-in microphone to record clear audio via a single coaxial cable.
eBay