A dvr security system is a kind of surveillance camera system with digital security cameras that records motion video digitally hence the word Digital Video Recorder came from. It is an economical surveillance solution but with a high quality recording and allows monitoring from various location or computer.

With the help of a DVR card stored within the system, signals from the digital security cameras are being captured and stored in the hard drive digitally, thus, can go on for several months without much maintenance. The quantity of documentation is determine not only by the hard drive capacity but also by the number of cameras and frames per second frequency.

Advantages of DVR Security System Over Traditional
Retrieval of data in the traditional method needs a lot of scanning in order to locate the exact event that wants to be retrieved. In DVR security system on the other hand, retrieval of data can be achieved in an instant as recording of video is labeled or stamped to specify the time and date, making dvr security cameras more preferable to users.

Compared to traditional video security system, DVR security system provides high quality digital image recording, playback, archive, and processing. Additionally, Digital Video Recording can be customized to meet individual preferences and needs, making it more user-friendly. Often, DVR security cameras are set with additional features such as auto-start recording and with night vision. Sensitivity scale of digital recorders, enable users to set the system to document based on a specific level of motion.

Another advantage of dvr security systems is the ability of its security video camera to be controlled remotely with the use of the DVR device. It also allows the users to zoom the image, pan or even rotates to have a better access of the field.

How does it Work?
A DVR security system is a set of closed circuit video cameras connected to a DVR device or a PC capable of digital video recording. The number of video surveillance cameras to be installed depends on the range and dimension of the area to be monitored as well as the layout. Often, a single camera can monitor in a range of 1000 square feet or 93m². Upgrading from VCR to DVR is quite simple; you only need to plug-in the existing CCTV camera system to the new DVR security system and let the recording begin.

When the hard drive reaches its capacity limit, the DVR sends an alert via beeping, unless the system is set to overwrite previous footage. In some DVR security system, built-in option of audio is made available though some requires additional audio kit record audio sounds.

Some digital video recording security systems have the ability to detect motion and stamping events therefore, removing much of the management and monitoring from the personnel involved in monitoring events, making them more efficient and well-organized.

Continued development of DVR security systems have progressed significantly in recent years, thus it is quite possible that in the future, the system will reach its remarkable purpose and functionality.