Plug & Play with Hikvision NVR. 4-ch 1U 4 PoE 4K NVR DS-7604NI-Q1/4P > Easy-to-use P2P Cloud service. > Built-in Mic & PoE. Built-in Mic Yes. IP Video Input 4-ch. Built-in waterproof microphone,designed for optimal noise cancellation and echo reduction, high quality audio performance.
eBay