CCTV DVR H. 264 Network Digital Video Recorder 1.Support 2 USB DVR 2.PTZ, Audio, Network, ... Digital Video RecorderCCTV DVR Features:1. H.264 Real-time Recording, support USB, PTZ, network, two-way audio,Alarm, VGA;2. Support mobile ... ;4. Dual-core CPU; Steady System Function;5. Playback, video, network transmission, mobile browsing, and backup etc. work simultaneously;6. Access to ...