How can I specify a CCTV system?

There are many different cameras each designed for different applications, for example black and white, colour, day and night, wide angled, high and medium resolution. The costs vary depending on the cameras capability and the quality of the equipment often depends on the grade of image resolution that you are looking for. The specification should always be based on your needs.  All NSI approved companies are audited to the NSI code of practice NCP 104 that includes a section on defining customer needs.

Ask for a system that complies with NSI Code of Practice NCP 104 or alternatively BS 8418, which is more specialised.