What is CCTV Camera and How does it Work?

CCTV is the short form of “Closed-circuit television”, and we also identified as video surveillance. In this article, we will know about the CCTV background, what is CCTV and how it works, types of CCTV cameras.

Background of CCTV

1942 during WW2 in Germany, Walter Bruch developed the first CCTV. The main purpose of this CCTV was to monitor the V-2 rockets, then in 1949, the CCTV cameras became a commercial product.

What is CCTV and how its work?

CCTV is a video camera that is used to transfer a signal to an exact place, on a limited usual of monitors. Basically, this is use for home and office security, further, it’s used for more secure places.

Further, CCTV is a video system in which we can set cameras in exact places and record video images and spread these to videos and images to a monitor, with only a minor number of persons being able to entree it.

If we talk about security, the CCTV cameras are best for security purpose whether public or property security. It’s also used for the investigation or crime dedication purpose. CCTV cameras are 100% legal if you are using for legal purpose.

Using CCTV for home security, then you don’t require permission for this but you need to tell of neighbors about CCTV.

Do I Need a CCTV license?

Using CCTV for business purposes, you need to tell people that you are monitoring them. You must have a valid license from the (SIA) Security industry Authority.

Types of CCTV Cameras

There are following types of CCTV Cameras that are mentioned below:

  • Bullet CCTV
  • Dome CCTV
  • Infrared/Night Vision CCTV
  • Wireless CCTV
  • Network/IP CCTV
  • Thermal Heat Detection CCTV
  • High-Definition HD CCTV

Further discussion:

Bullet CCTV

Bullet CCTV is the type of CCTV camera that normally shaped like a rifle bullet shell.


Dome CCTV camera is the type of CCTV camera, these normally used in the home or restaurants, etc.

Infrared/Night Vision CCTV

As the name implies, such cameras are used in dark places, they are easily captured in the night.

Wireless CCTV

These types of CCTV cameras require only one cable for power.

Network/IP CCTV

These types of cameras are also called internet protocol cameras in which you can get received or send data through the internet.

Thermal Heat Detection CCTV

This types of cameras installed for the detection of smoke, heat, etc. when these cameras detect something wrong like smoke, heat, fire, etc., they automatically on.

High-Definition HD CCTV

High-definition cameras also called HD CCTV which can record video up to 1080p resolution.


Read also: The latest list of expensive phones in the world 2020


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