Developed on the basis of the latest technology, the high performance DS-7200 Series Digital Video Recorder combines the latest in advanced H.264 video encoding and decoding technologies delivering solid reliability and longer recording times. The system can be used either as a standalone video surveillance product or to build up a powerful surveillance network making it is perfect for home or small business applications. Features: H.264 video compression 4CIF resolution real time recording VGA output at 1280 × 1024 resolution Dual-stream 4/8-ch synchronous playback SADP(IP Finder), NTP, DHCP, SMTP protocols Specifications: Video/Audio Input Video Compression:  H.264 Analog Video Input:  8-ch PAL/NTSC Adaptive:  Support Video Input Interface:  BNC (1.0 Vp-p, 75Ω) Audio Compression:  G.711 Audio Input:  1-ch Audio Input Interface:  RCA (2.0 Vp-p, 1 kΩ) Two-way Audio:  1-ch RCA(2.0Vp-p, 1kΩ)   Video/Audio Output VGA Output:  1-ch, resolution: 1280×1024/60Hz, 1024×768/60Hz CVBS Output:  1-ch, BNC connector (1.0 Vp-p, 75 Ω);Resolution: PAL: 704 × 576, NTSC: 704 × 480 Recording resolution:  4CIF/2CIF/CIF Frame Rate:  Main stream: 4CIF / 2CIF / CIF@25 fps (P) / 30 fps (N)Sub stream: CIF / QCIF Video Bit Rate:  32Kbps~2048Kbps, or user-defined (Max.3Mbps) Stream Type:  Video/Video&Audio Audio Output:  1-ch RCA(Linear, 1kΩ) Audio Bit Rate:  64kbps Dual Stream:  Support Synchronous Playback:  8-ch   Hard Disk Driver Interface Type:  1 SATA Interface Capacity:  Up to 2TB capacity for each disk   External Interface Network Interface:  1 RJ45 10M/100M adaptive Ethernet Interface USB Interface:  2 USB 2.0 Interfaces Serial Interface:  1 RJ45 RS-485 half-duplex interface   General Power Supply:  12 VDC Consumption:  ≤15W (without hard diskor DVD-R/W) Working Temperature:  -10 °C ~ +55 °C Working Humidity:  10% ~ 90% Chassis:  Standalone 1U chassis Dimensions:  315 (W)× 230(D) × 45 (H)mm Weight:  ≤ 2kg (without hard diskor DVD-R/W)