REVO Elite Commercial Grade advanced 8 channel DVR produces 240 Images per second and allows real time recording on all channels, Pentaplex technology allows users to View Live Video/Record/Search and Playback/Back Up Video/Access the DVR Remotely - all at the same time, All DVR channels have BNC camera connectors, DVR has a 3TB hard disk drive, DVR includes video management software, System can be remotely viewed via the internet or most smart phones, A DVD burner is included, The commercial grade cameras produce 600TV Lines of high resolution rendering superior clarity, The two mini domes are vandal proof and have a night vision of up to 33FT in total darkness, When flush mounted, the camera is only 2, 6 inches in depth, including a dome of only an inch, The two vandal proof turrets are made of die cast aluminum goes up to 700TVL at night and cans see up to 130FT in total darkness, Advanced DNR3 effectively removes noise and ghosting to provide clear images, even in dark environments, The 2, 8 - 12mm commercial grade varifocal lens allows the camera to be set for tight/up close shots to crisp wide shots, BNC connected, the pass thru mounting renders no visible wires once mounted, Camera generates an on screen menu for settings, Camera power supply and cables sold separately, Connection type: 8 BNC ports, View and access live and recorded video remotely over the internet or mobile phone, Hard Drive: 3TB, Resolution: 600 TV lines, Dimensions:, Length: 24, Height: 18, Width: 24, SKU: REAM103