DM-2804     H.264 video compression Up to 4CIF resolution recording 2×2.5-inch SATA interfaces Patented hard disk vibration-proof and bracing technology Built-in 3G (WCDMA/cdma2000) module (optional) Built-in GPS module Model DM-2804 Video/Audio Input Audio Input: 4-ch Video Compression H.264 Analog Video Input: 4-ch PAL/NTSC Adaptive: Support Video Input Interface [...]

DE-2908 EXT     Up to 64 network camera can be connected Support like view storage and playback of the connected camera at up to 5MP resolution Up to 8 SATA Hard diskand ESATA disk can be connectedfor both recording and backup Either normal or hot spare working mode is [...]