TVL or television lines - if you`re only going to read one thing then make it this !

This is the number of horizontal lines a camera can record and if you`ve done a bit of research already, you would be forgiven for thinking it's the holy grail of camera quality. It isn't.

 Of far more importance is ensuring you use a camera with the right lens for your particular application. No amount of TVL will allow detail to be captured beyond the limitations of the lens. Wide angle equals poor detail capture as you move away from the camera.

 At D1 resolution your DVR records at around 400,000 pixels per frame. You need the lens to concentrate enough of those pixels onto the subject in order to capture detail. If a 450TVL camera allows you to read a number plate at 8 metres then a 700 TVL camera with the same lens wouldn't be able to read it at any greater distance.

 Notwithstanding the fact that TVL isn't a measure of how much detail a camera captures the numbers used are often very misleading. We see instances where the black and white night time resolution is quoted, not the day time colour resolution or simply a made up number.

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Hard drives - the modern day CCTV video cassette

All DVRs store their footage on an internal hard drive. Most use a SATA hard drive, this stands for Serial Advanced Technology Attachment and is the method by which the hard drive connects to a device. Computers also use a SATA hard drive but DVR and computer drives are different. Hard drives for DVRs are specifically designed to run 24 hours a day and to operate at maximum capacity. Although they will work for a time it is not recommended to use computer drives in a DVR.

 We sell hard drives separately to the DVR because storage requirements vary between customers. We recommend 250GB per camera, this will give around 3 weeks rolling footage at D1 resolution recording 6 frames per second 24 hours per day 7 days a week.

If you purchase a DVR and a hard drive from us at the same time we will install and format the hard drive for you free of charge. We will also configure the DVR so it arrives plug & play. This saves you time and means everything is done properly.

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What are the features to be seen before buying a CCTV camera for home surveillance?

The major thing before purchasing a CCTV system is to find what is the purpose of your CCTV camera. For Example Whether you need it out side or inside the home or somewhere else. You also have to be sure that do you need it for night.

CCTV systems have 3 main elements. The DVR recorder, the individual CCTV cameras and accessories such as leads, power supplies and so on.

DVR buying guide

The Digital Video Recorder or DVR is an industry specific product central to any CCTV system. It stores footage from the cameras, arranges live camera images on screen, handles playback of previously recorded material and in the case of more modern DVRs allows remote access to your CCTV system via the internet.

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Best Home Security CCTV Camera System

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CCTV Cameras delhi .HD wireless Surveillance Security CCTV ...

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How to determine the size of digital security systems

As individual perpetually taking photos I created this page as lots of individuals keep asking Pine Tree State what camera they must get. Notice discount computers, low-cost camera, get digital cameras. Strive before you purchase - I've perpetually been a firm believer that you just ought to handle a camera before you purchase digital security systems delhi ncr.

Determine the Size

Experienced camera users apprehend picture element size is not everything. The little size and flexibility permit simple integration of digital cameras into all elements of the info. If you care a lot of regarding value and options than compact size, select a regular size CCTV security Guard delhi ncr. There are 3 basic "sizes" of digital cameras and knowing what size camera suits your desires can build your search a lot of easier. For digital SLR cameras with interchangeable lenses it's tougher as totally completely different cameras have different size sensors. This is often why I am presently yearning for an additional camera that includes a least size combined with a most quantity of helpful options. These are regarding the dimensions of a folder and employed in digital cameras created by Nikon, Canon, Kodak and lots of others. Once selecting a camera you have got to have faith in the resolution of the images, size and memory. A bigger inner diameter makes the L-Ring 3200 good regardless of the lens size of your camera. This has nothing to try to together with your camera being digital it's entirely a results of smaller frame size of CCTV Installation Service delhi ncr.

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Reference taken from here.