REVO"s professional small surveillance system is perfect for home or small business, While small, REVO"s 4th generation of professional DVR"s continue to deliver commercial grade type features at affordable prices, EZLink, Push notifications to most smartphones, as well as full DVR access using your smartphone to control PTZ cameras, search recorded video and monitor audio while you"re on the go, via REVO Mobile, a free app, are just a few of the features of this powerful, professional DVR, This particular system comes packed with 4 night vision camera"s that can see up to 100 feet in total darkness in crisp 700TVL high resolution, All cameras come with 60" of REVO"s exclusive Quick Connect cable, This special cable handles power/video/audio in one simple click connect cable, REVO camera"s feature pass thru mounting adding extra security to your system by offering no visible wires when mounted to a wall or ceiling, The cameras are indoor/outdoor mini turret style cameras that are weather resistant and feature a complete metal case housing, Advanced, Intelligent, Video Surveillance, REVO!, Connection type: 4 RJ12 ports, Cameras have a built in microphone for audio monitoring capability, View and access live and recorded video remotely over the internet or mobile phone, Cameras lens: 3, 6mm, Hard Drive: 500GB, LED lighting distance: max 100ft, Resolution: 700 TV lines, Length: 22, Height: 17, Width: 12 SKU: REAM098