A DVR, or Digital Video Recorder, is a key component of a CCTV system. It is the device that records and stores the footage captured by the cameras in a digital format.

The main function of a DVR is to capture and compress video data from the CCTV cameras, and then store this data on a hard drive for future retrieval. When connected to the CCTV cameras, the DVR continuously records footage in real-time, providing a reliable record of any activity that occurs on the premises.

By investing in a high-quality DVR, businesses and homeowners can ensure that they have a reliable and effective security system that can provide valuable evidence in the event of a security breach or incident.