Designed and engineered for residential, commercial and small business, the NS-1021 is a new generation stand- alone security Network Video Recorder to meet increasing surveillance market demand. With dedicated IP address and in-built web-server, the NS-1021 channel NVR delivering high quality video streams across the intranet or internet which allows local and remote user to monitor or control the device by simply using IE or Netscape web browser simultaneously a any where. Moreover, user can comprehensively control the camera and Pan Tilt Zoom remotely through IE. it Can transmit high quality picture of M-JPEG, two channels transmission rate are 25 frames per second, support two frames to display at the same time. Has audio function.