Real time Audio, Video and Data Tx/Rx
  Sending motion data 30frames per second
  Supporting Pan/Tilt/Zoom Function
  Supporting TCP/IP, UDP protocol for Network
  Supporting PC Monitor or CCTV Monitor to watch Live Image
  Automatic Motion detection
  Supporting of Auto/Manual Recording / Playing functions
  Hardware MPEG-4 codec chip

Description nDVR 1000/ nDVR 4000
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Signal NTSC /PAL
Resolution 720x480, 640x480, 320x240
Compression MPEG 4 , 30fps over 512kbps
Video Inputs 4BNC, 75ohm, 1Vp-p
Video Outputs 4BNC(LOOP), 75ohm, 1Vp-p
Audio Inputs 1/4 RCA Phone jack, -32dBm variable
LAN Interface UTP(10/100BaseT auto-sensing),RJ-45
PTZ Interface 9-pin D-SUB(RS-422 or 485)
Alarm Inputs 4 Alarm(Sensor) inputs
1(Relay) output