DVR Wireless Security System

A Digital Video Recorder or DVR Wireless Security System is one of the most popular systems used for security and surveillance applications today. Although there are many variations of a typical DVR Wireless Security System, the general set-up for a security/surveillance application of this type involves the use of wireless Closed Circuit Television or CCTV cameras and a digital hard drive used to record the pictures or video sent to it by the CCTV cameras.

The key components of a DVR Wireless Security System include wireless CCTV cameras with antennas, a high speed digital hard drive, a wireless single or multi receiver, and a digital video recorder. Each of these components serves a specific function to provide a total package DVR wireless security system. Let's take a closer look at each component.

The wireless camera comes in many varieties. There are dome cameras, box cameras, bullet cameras, PTZ or pan tilt and zoom cameras, and even explosion proof cameras. Wireless security cameras may capture still pictures and/or motion video and may provide the images in black and white or in color. Some cameras also come equipped with a microphone for capturing sound. In addition to these functions, wireless security cameras normally have an on-board transmitter that operates in the 2.4 GHz or 5.8 GHz bands.

The broadcast range for these wireless cameras is usually somewhere between 200 and 700 feet depending upon environmental conditions.
The receiver is basically like a radio receiver or in-home wireless telephone receiver base. It receives the wireless signal transmitted from each camera and sends that signal to the DVR. Generally, receivers have more than one 'channel'; that is, they can receive signals from more than one camera at a time. A receiver that can handle input from four different security cameras at one time is usually referred to as a four channel receiver.

After the camera's signal is received, it is normally processed in some way before it reaches the DVR. The processing circuitry is normally found on an electronic 'board' that is included with the DVR. This board may have one to several different file compression/decompression or CODECs wired into its circuitry. The purpose of using a CODEC is to minimize the size of the file to be stored on the DVR without sacrificing too much quality.

Digital video is basically nothing more than digital photographs taken at a rapid rate (normally up to 30 frames per second or fps). However, if you consider the digital size of a file for one photograph, you can only imagine the total size for thousands used to create a video. For example, a typical digital photograph may create a file 1.5 megabytes (MB) in size. One hour of video would be 30 photographs per second, times 60 seconds, times 60 minutes or 162,000 MB or 162 Gigabytes (GB) of information! A 250 GB hard drive would be filled in only two hours. However, CODEC boards reduce the file sizes drastically allowing for several hours to days of recording without filling up the hard drive.

Most DVR wireless security systems also include a monitor to view the cameras' output in real time as well as to view the playback of recorded video. The monitor may be a small wireless unit itself or can be a larger LCD type monitor used with most computer systems.
There are many benefits to using a DVR wireless security system. Technological advances have made the components relatively inexpensive so that these systems can not only be used by businesses but can be used by consumers to provide security surveillance for the home. Wireless systems have the added benefit of placing the cameras in strategic places that are unlikely to be seen by potential criminals and vandals. In addition, DVR wireless security systems do not require signal transmission cables from the camera to the DVR, making installation much simpler and neater as well.

DVR – Home Security Systems

Security DVR has now penetrated into many segments of industry including television, motion pictures, logistics, and surveillance and monitoring. DVR is most often used in television for pausing live television shows, go back for a few seconds, and then resume play. Another feature of DVR is that it permits you to skip commercials. One of the major advantages of DVR is the quick storage and retrieval of data. All captures images, motion pictures, and associated data gets converted into digital format for storage as well as retrieval. Since the data is in digital form, there is no loss of quality and retrieval ensures a very accurate reproduction of captured data.

DVR may be divided into two major categories. One category is platform dependent, for example the ones that are used on computers. The other category is the so-called standalone DVR that does is completely platform independent and an individual self-reliant unit in itself. Platform dependent DVR will receive data through some device, such as a camera, process that data and after converting it into information it will pass it on to whatever storage device exists on the computer. Platform dependent DVRs are relatively simple devices.

Since standalone DVRs have to perform many additional functions than data handling, they are more complicated and will typically include their own power supply, CPU, storage mechanism, and other DVR components. All required software is embedded on a circuit chip. While standalone systems are complicated in terms of the number of components, they are actually simpler in practical terms because of their ease of use and integral structure. The hardware and software in standalone DVR units is 100% compatible and there are no ambiguities to cause concern. The advantage of platform dependent DVR is that they can be upgraded or modified as the software matures. The use of add-on devices on platform dependent DVR also allows for greater customization where standalone units are usually available on an as-is basis. Such DVR is used in banks, retail, and transportation industries quite regularly. However, connecting them to newer hardware might result in conflicts or incompatibility.

Televisions have also benefited a great deal through the use of security DVR. Using a DVR Security System makes it possible to record 4 programs at the same time as well as viewing 2 programs simultaneously. The newly advertised features like pausing live television, replay, and commercial skipping are made possible through DVR. While this technology was available through VCRs it was very limited. DVR can store almost 20 hours of television. DVR surveillance security system is being used in offices to store hundreds of hours of security data in high quality digital format while home users have more control over their entertainment.

Why Upgrade To A DVR Surveillance System

CCTV DVR Surveillance Systems are not extremely hard to figure out and maintain. DVR surveillance cameras can help protect your business and keep your home safe from burglaries and fires. Lastly, did you realize you could use DVR security systems as a human resource tool in monitoring your personnel?





DVR Surveillance Systems, or a digital video recording surveillance system, can be installed just about anywhere and can be viewed on just about anything. The DVR security systems no longer require large amounts of hardware to store video cassettes.

These systems allow you to record what is going on in various places of your home and business on a hard disk and then be viewed on personal computers or televisions. The playback of specific material is easy using these DVR Surveillance Systems and you do not have to filter through hours of inaction to get the desired viewing.

If a monitoring system that only lets you observe if doors are being tampered with or unwanted motion inside a residence is not enough for you, then look to the DVR security surveillance system. You can place wireless cameras in any number of places for literally only pennies a day. You can have spots monitored in your business and residence that you had completely forgot about and have thus become susceptible to crime.

Think about losing all your business or personal assets because of an arsonist starting a fire. While your insurance covers the damage the DVR video surveillance systems in place will help you recover invaluable information when the perpetrator is caught in the act. You can now prosecute to the full extent of the law because you have unmitigated proof that the fire was not an accident.

A great little unknown tool is that people work better when they are being watched. If you have installed DVR surveillance systems in your place of business and made this fact known, you will see improvement in so many employee functions. You may even be able to get rid of your time card system if you monitor your employees with your DVR surveillance systems.

It is easy to see, literally, the many reasons to install a DVR security surveillance System. The downfalls are few and the improvements made over the years to the DVR video surveillance system make it easy for anyone to be able to install and use the equipment. Your business and your place of residence should be kept secure and you should have peace of mind knowing that you have installed the best monitoring device on the market with the DVR surveillance systems.