... USB,PTZ,Audio 3.Graphical interface 4.CCTV DVR Features:WT-DVR1004 CCTV DVR DVR Digital Video Recorder1.8 CH,H-264 triplex ... time Professional DVR 2.Support network,playback,Iphone4,3G phone 3.Support 2 ... 5.Support dual coding stream6.Multiple operation modes, support any channel playback under real time surveillance7.Graphical interface8.Support D1 adn ...