The trends of CCTV Security Cameras

Introduction:

Closed-circuit television (CCTV) is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors.

It differs from broadcast television in that the signal is not openly transmitted, though it may employ point to point wireless links. CCTV is often used for surveillance in areas that may need monitoring such as banks, casinos, airports, military installations, and convenience stores.

In industrial plants, CCTV equipment may be used to observe parts of a process
from a central control room; when, for example, the environment is not suitable
for humans. CCTV systems may operate continuously or only as required to monitor
a particular event. A more advanced form of CCTV, utilizing Digital Video
Recorders (DVRs), provides recording for possibly many years, with a variety of
quality and performance options and extra features (such as motion-detection and
email alerts).

Surveillance of the public using CCTV is particularly common in the UK, where there are reportedly more cameras per person than in any other country in the world. There and elsewhere, its increasing use has triggered a debate about security versus privacy.

While Buying CCTV Security Cameras:

• Evaluate your needs: Do you want to monitor general comings and goings? Do you want to see faces, merchandise, crowds? Do you need wireless or wired CCTV security cameras? Do you need an indoor and/or outdoor cctv camera systems? Do you need a 1, 2, 8 or 16 camera system? What is your budget?


• Select the type of camera: There are two types of CCTV cameras, CMOS and CCD which are the image sensor. CMOS based cameras are cheaper but do not produce as clear and sharp image as CCD cameras.


• Select black and white or color: If you are going to use the cameras in an environment where the light conditions are very low, it is recommended to buy a black and white CCTV camera system. Color should only be considered for inside use with good lighting conditions.


• Understand light level: One of the most important specifications. Light levels are measured in Lux. The lower the number, the less light it will take to reproduce a clear image.


• Understand resolution: The higher the resolution number, the sharper the image will be. Entry level camera resolution is 330 lines, high resolution cameras producing better than 400 lines.


• Select a monitor that will match the resolution of your CCTV camera system.


• CCTV cameras system recorders: DVR (digital video recorder) which record onto hard drives is the best option.