... .264 realtime HD DVR recorder -USB,PTZ,Audio,Network,VGA -SATA HDD up to 2TB - ... resolution 4 channel HD DVR Features: 1. H.264 Real-time Recording, support USB, PTZ, network, two-way audio, VGA, HDMI ... etc. work simultaneously;5. Access to local multi-screen real-time preview, settings, backup and playback video through IE; 6. Recording ...