| Video Compression: | H.264/MPEG4/MPEG2/MJPEG | 
  | Video input: | 8-ch, | 
  |  | BNC (1.0 Vp-p, 75 Ω) | 
  | Audio compression: | G.711 | 
  | Audio input: | 8-ch, | 
  |  | Line input interface | 
  |  | (2.0 Vp-p, 1 kΩ) | 
  | Two-way audio: | 1-ch, 3.5 mm audio (2.0 Vp-p, 1 kΩ) | 
  | Audio output: | 1-ch, 3.5mm interface (Linear, 600 Ω) | 
  | Encoding resolution: | 4CIF/2CIF/CIF/QCIF | 
  | Frame rate: | H.264/MPEG4/MPEG2 encoding: 25 fps (P) / 30 fps (N); MJPEG encoding: 15 fps | 
  | Video bit rate: | 32 Kbps ~ 3072 Kbps, or user defined (Max. 8192 Mbps) | 
  | Audio bit rate: | 64 Kbps | 
  | Dual Stream: | Support | 
  | Stream Type: | Video/ Video&Audio | 
  | Protocols Supported: | IPv4/v6, HTTP, HTTPS, QoS layer3 DiffServ, FTP, SMTP, Bonjour, UPnPTM, | 
  |  | SNMPv1/v2c/v3(MIB-II), DNS, DynDNS, hkDDNS, NTP, RTSP, RTP/RTCP,TCP, UDP, IGMP, ICMP,DHCP, ARP, SOCKSv4/v5, PSIA, OnVIF, HIKCGI, netFilter | 
  | Type: | NAS, IPSAN | 
  | Capacity: | Up to 4 TB capacity for each disk | 
  | Network interface: | 1 RJ-45 10 M / 100 M /1000 Mbps adaptive | 
  |  | Ethernet interface | 
  | Serial interface: | 1 RS-485, 1 RS-232 | 
  | Alarm in: | 8 | 
  | Alarm out: | 4 | 
  | Power supply: | 12 VDC | 
  | Consumption: | ≤ 10W | 
  | Working temperature: | -10°C~+55°C(14°F~131°F) | 
  | Working humidity: | 10%~90% | 
  | Dimension(W×D×H): | 315 × 45 × 200mm | 
  | Weight(without HDD): | ≤ 2 Kg |