In these years, SD Card DVR is widely used as a single channel recorder for spy camera or vehicle recorder. Because it is very easy to install and use.
Now the spy camera is limited by the law of government.
Coomatec develops the SD Card DVR to the legal use, such as home, office security as a very easy DVR CCTV Camera.
Insert the TF card, and Plug in, the DVRCam is working to record.