A DVR converts the signals from the analog camera into a viewable digital format that can be stored on a hard drive. DVR video surveillance doesn’t require an Internet connection.
A DVR system is a hardwired device connected directly to a CCTV camera. It means that the video is directly stored on a hard drive and is easily accessible. The footage can be seen as soon as it’s been recorded. A Digital Video Recorder system has advantages such as cost-effectiveness, ease of use, and you won’t worry about signal loss.
A network video recorder (NVR) is a specialized device that records security video surveillance footage in a digital format to a hard drive. As an NVR doesn’t have a video capture capability, the video is generally processed and encoded from the surveillance IP or CCTV camera and transferred to the storage via Ethernet or WiFi network.
NVR includes many advantages, such as:
- recording video and audio;
- better image quality (than a DVR provides);
- system versatility;
- better viewing coverage;
- wired or wireless options;
- requires 1 cable for video, audio, and power.
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