Safety system plays more and more important role in our daily life because we need one assistant to keep an eye at our home, office or shop. Users can do their own security with this simple safety device. It is a cost-effective solution to replace commercial VCR tape recorder by this DVR item which also supports stable digitized video record and management of the recorded data. This is a brand new 4-CH Network Stand-alone Digital Video Rcorder & 4 Wired CCD Cameras Security System. MPEG4 Video Compression, Linux Operation System, For PC-link Playback and Backup / USB 2.0, SATA, One Fixed HDD Rack, Supports up to 750GB HDD, Audio Recording Available and 4 PCS Brand New IR Color CCD Camera, 1/3 Inch Sony CCD Pickup Device, 4 mm CS CCTV Lens, 36 Lights Number, Advanced High-Resolution Image Sensor Produces Sharp, Clear Video with 420 TV Lines. What’s more, the price is so competitive. So it’s time to choose it right now! It will make your life safer and easier.