Setting up a CCTV camera system is not something to be taken lightly. It is a significant expenditure and should be thought through before a single pound is spent. The most important part of any CCTV system is the camera as it provides the eyes of the operation, so to speak. The key to buying the right CCTV camera is not simply in going out and buying the biggest or most expensive model on the market.
The key is to start by identifying the needs a camera has to meet. Once those needs are known, it becomes easier to find the right camera, as opposed to spending a large amount of time trying to select a camera without really knowing how or why it will be used.
Knowing what matters to a given purchaser not only speeds the decision process, but also helps to ensure they make the right CCTV camera purchase decision. Therefore, the key is knowledge, knowing what to look for in order to meet the user’s needs.
Most CCTV, or closed-circuit TV cameras used in home security work, are solid-state electronic devices that are connected to a central recorder rather than broadcasted over the air. It is, therefore, a closed circuit, broadcasting to a specific location, rather than to anyone in range. The camera itself is usually made up of the following main components: lens, sensor, and digital signal processor, or DSP. In simplest terms, the lens focuses the light that is to be imaged onto the sensor, which then passes it to the DSP which converts it into a TV signal. This signal is then transmitted to a central location either by wire or wirelessly for storage and viewing.