How Many Cctv Cameras Do You Need?

CCTV (meaning 'Closed Circuit Television' which refers to the fact that the cameras

are shown on a screen rather than broadcasted to lots of them) is a very useful tool for security purposes. It can help to prevent crimes as well as other problems such as fires or accidents, can be dissuasive, and can help you to chase up problems with evidence and a better understanding of what happened. It allows you to make positive changes in your community by providing safer and more secure streets through your use of filming, and through your chasing down and removing criminals.

However one CCTV camera is very unlikely to catch you much action and is unlikely to help you protect your own shop or home let alone any local community. Of course the more cameras you have as a rule the better your coverage will be, but at the same time the more effort, time and money you will have to spend on them. If you use your cameras well then you can minimise the number that you need to buy. Here then we'll look at a minimum number of cameras you can use to achieve a good coverage.

Firstly you need to keep your cameras high up. This has several benefits but first and foremost it will ensure you get a good coverage of the entire room. This way you can get a view over any obstructions such as shelves or cupboards, and at the same time you can get a wider angle on the activities. Generally CCTV does not need to be able to pick up fine detail of what is going on and will be perfectly find picking up just the number of people in your shop and their general movements meaning it's fine if your cameras have a high up position over the top of the action. If something starts to go wrong then this will normally be very self evident and you don't need to see someone put your belongings in their pocket to know they're shifty. The other benefit of putting CCTV cameras up high is of course that it prevents the potential criminals from vandalising or steeling them. This will mean that the number you buy initially is hopefully the number you'll still have in a few years and is therefore a guaranteed way to need fewer CCV cameras.

If you have your camera in the top corner of a room then this will give you the best angle on all the action. Depending on your company things like resources as well as reasonable security threat you might then decide to get another camera in the opposite corner, but for most businesses one camera in the corner should suffice. One camera per room for small businesses then is a good general guide, whereas larger companies might benefit from having two in each area. Of course it's also important to have CCTV outside for most companies and here you can choose to have your camera in the front or back of the building or both.

by: Emily Robinson

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