4-ch Triplex Network Digital Video Recorder w/USB, Audio & Video Motion Detection.
The NDVR -04 is designed to satisfy video surveillance needs of small businesses and homes. It is relatively inexpensive and much less complex to operate than other expensive and complicated network DVRs. It performs clear and smooth digital video recording and allows user to monitor remotely over broadband line internet / network with fixed/static IP address. The recorded video files can also be easily backed up and saved to a portable USB Flash Drive for easy submission of evidence. The major advantages of using DVR v.s. VCR can be find out at http://www.securitymaninc.com/faq/faq_vcr_dvr.html