Comset Computers is one of Chicago's leading retailers of DVR based video security systems. DVR based CCTV surveillance systems use the same technology found in home DVRs. Modern CCTV systems take advantage of increasingly large hard drives and advanced computers to record several days' worth of video without having to deal with VHS Cassettes. DVR security systems also allow you to access video in real time from any secure internet connection. For more information about having a DVR based video security system installed in your home or business, contact us today.