Top advanced arithmetic: H.264 (MPEG4 Part 10) video compression. Powerful chipset: adopt Philip-Trimmed Chipset that has 16DSP. One DSP deal with one channel. ● High stability: absolute Hardware compression and professional embedded operating system. ● Real time: 8ch video and audio synchronized display and record real time. ● Perfect image: 9 grade image level from 128k to 4.5M. It can satisfy with low bit rate for network transmission. And also for suitable bit rate for high image recording. ● Good network transmission: It can transmit on PSTN, ISDN, and ADSL, WAN, LAN. ● Built-in 8 HDD: for industrial configuration. Don't pay any money on Disk Array. ● Individually working: Each channel compresses the signal at real-time individually, the parameters of resolution, frame, and record time can be set up separately. ● Support real watermark technology so that compressed image file can't be juggled.