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Wireless surveillance cameras

Wireless surveillance cameras

Wireless surveillance cameras have become very popular because they are easier to install, easier to conceal and more flexible than wired cameras. However, despite the hype surrounding these conveniences, wireless cameras are not quite up to the same standards as their wired counterparts and there are a few aspects that make them unsuitable for certain surveillance applications.

Wireless cameras are only wireless in the sense that they use transmitters to broadcast signals to a receiver located at a recording device such as a VCR or DVR. This eliminates the need for cables to connect the two but it does not eliminate the camera's need for a power source. This means that wireless surveillance cameras still need at least one cable to plug them into a power outlet. Wireless outdoor cameras need power too so this may mean concealing a cable behind brickwork or beneath a flower bed. Some hidden video cameras are battery operated but even these need to be plugged in on a regular basis in order to charge the battery.

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Wireless security cameras - the pros and cons

One thing that many people are not aware of is the fact that wireless surveillance cameras are prone to interference which can make them unsuitable in many situations. This is because the frequency they use can be disrupted by just about anything with an electrical motor, including cordless phones, computers, florescent lights and air conditioning. Disrupted frequencies can then result in poor, grainy picture quality. It is for this reason wireless cameras are not recommended for most surveillance needs.

Another problem is distance. Most wireless surveillance cameras boast high frequency transmitters that can cope fairly well with long distances but what the advertiser doesn't tell you is that even these don't cope very well with obstacles. Objects such as walls, buildings and trees can also disrupt the frequency resulting in poor image quality. This means that in order to achieve a good image the transmitter and receiver need a clear line of sight to avoid disruption - this can become a major issue with outdoor security camera systems. Shorter distances are also preferable to long distances.

Outdoor security cameras in rural areas

Wireless surveillance cameras can be useful in some situations, particularly where installing wired cameras would not be feasible. They are well suited for isolated or rural areas where there would be little interference from buildings and electrical appliances and where security is often an important issue for home owners.

Before purchasing wireless surveillance cameras make sure you speak to a professional to find out whether it is the best option for your needs, particularly for larger areas such as office buildings. Where large surveillance systems are required it is likely that wired video cameras would be better suited to the job.