(916)672-2660 DVRs work hand in hand with surveillance systems. A surveillance camera system transmits audio or video (or both) to a Digital Video Recorder, the DVR then stores the information on an integrated or removable storage device (IE. hard drive, USB flash drive, etc.). You are then able to review the file on a television or integrated device. These systems often include the ability to edit the video, increasing the sharpness, allowing you to better see facial features while also being able to zoom in on specific characteristics that may be important to you. By having all of your cameras transmit to the same digital recording device you will be able to efficiently review and store files for up to several months at a time. Remote Access allows a home/business owner to view their home or place of business from anywhere in the world. This now means you can go on vacation and still manage your business while drinking a Mai Tai on the beach.