CCTV DVRs Online for Sale in South Africa | DIY Geek

In a DVR system, the analog cameras stream an analog signal to the recorder, which then processes the images. The advantage of this system is the reduced complexity required of the camera when compared to an NVR system. The camera connects to the DVR recorder via a coaxial BNC cable.

DVR recorders rely on a hardware chip-set known as an AD encoder, which is responsible for processing the raw data streaming from the camera into legible video recordings. DVR systems also have different requirements when it comes to the recorder. Specifically, in a DVR system, the user must connect every camera directly to the recorder. In comparison, an NVR system only requires that each camera connects to the same network. Also, in a DVR system, the recorder doesn’t provide power to the cameras. Each camera connection will need a splitter that supplies power to enable cameras to function.

DVR security systems are less flexible than their NVR counterparts in terms of camera type and mounting options. Whereas NVR based systems can integrate both wired and wireless security cameras, DVR systems can only use wired security cameras. DVR systems also have less flexible mounting solutions, because routing coaxial cable can be more difficult in tight situations and a power outlet is required for each camera.

Although in the past the video quality of DVR systems lagged behind comparable NVR systems, today this gap is significantly lessened. The difference between DVR and NVR systems come down to the cost, how the data is transmitted, and type of cameras. NVR systems tend to have better picture quality, as well as easier installation, increased flexibility, and native support for audio on every camera that has a microphone.

CCTV DVRs Online for Sale in South Africa | DIY Geek

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