The past few years have seen a sudden proliferation of CCTV security systems installed not only to protect business premises but private homes as well. It makes some of us wonder whether all these security measures really work; and if not, what would make CCTV security systems installed in our homes effective. To determine that we need ensure we have all the equipment to deal with perceived threats. There’s loads of information about surveillance systems on this site.
What Options Are Available
Modern CCTV systems consist of three main parts: The camera, the viewing monitor and recording equipment. Other than in stand-alone systems, the software which provides surveillance system management through the internet may be considered the fourth component.
The camera can be of many different types with widely varying capabilities. Some video cameras of the most passive type are oriented toward a specific direction. The view from these types of video cameras is limited by what is known as viewing angle – these may range from a low of about 20 degrees to more than 90 degrees in some cases. Wider viewing angles sometimes reduce image clarity to the point where features and faces become unrecognizable. However, some video cameras sport lenses whose viewing angle can be varied by zooming in and out. Pan tilt and zoom (PTZ) cameras are very popular these days, most of which feature dome type mounting.
There are pods which hold multiple cameras; units holding four video cameras are usually deployed to monitor four directions where corridors meet. Some cameras are able to rotate 360 degrees to reduce the need to install more units.
One important consideration when choosing video cameras is the image resolution. The higher the resolution, the more likely you will be able to make out the faces and features of any miscreants. For regular monitoring requirements, such as for monitoring your child in his crib, you may not need HD video surveillance. But in areas where you may need to identify facial features of intruders, an HD video surveillance camera is essential. CCTV cameras monitoring areas outside the home may benefit from night vision capability, aside from obviously being weather proof.
Monitoring equipment can be any type of screen, but preferably an interactive touch screen. The size really becomes relevant when the screen has to display video feed from multiple cameras. The more cameras you need to monitor at the same time the bigger your screen needs to be. An interactive screen just makes it that more convenient to use.
There are lots of recording options to choose from. You can capture and record video surveillance footages on analog tapes using VCR tapes. You also have the option to store video using digital video recorders. Hard drives store a lot more than any VCR tape could. As they are now very affordable, digital video recording on hard drives is the preferred mode.
For 24/7 monitoring, software needs to be installed, an internet connection has to be present, and a security company usually provides monitoring services.
Whatever CCTV system you choose, it is most important to ensure fitness for purpose – that means the ability to handle perceived threats.