4 Channel Standalone Digital Video Recorders, CCTV DVR, are mostly used for Home Surveillance in Small Businesses. Small Size and Easy to use user friendly interface. Most of models come with mouse and remote for easy control. Network Access is another great feature of Standalone DVR. You Can Connect up to 4 Security Cameras to one DVR unit and See it all from anywhere via internet. Some DVR units support also 3G Phone Access. 4 Camera DVR Systems are easy and inexpensive way to keep an eye on things. Some 4 Ch DVR's Come with built in LCD Screen so they take even less space. Every DVR has been field tested and is guarantee to be realiable and offers high quality recording.