Multiplexed (simplex) 4 channel (B/W CCIR/EIA standard or color PAL/NTSC standard compatible) stand alone DVR, for digital recording on Hard Disk (80 GB internal, one port available for extension and managing of up to 20 external HDD), 2 video outputs. It allows flexible screen picture management (QUAD, cyclic, PIP and ZOOM on live and on playing). Recording on scheduling, on alarm, continuous or Motion Detector function with settable sensitive area, LAN interface for networking through software provided (live view, play, save and print image on PC), RS485 communication port, VCR output and MARK IMAGE function to protect images from overwriting. Remote control unit is provided. Out of production.