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What is a CCTV Camera – How does it work?

CCTV stands for Closed-circuit TV, and is also known as video surveillance. This article will explain the background of CCTV, how it works and what types of CCTV cameras are available.

Background of CCTV

Walter Bruch created the first CCTV in 1942, during WW2. This CCTV camera was originally designed to monitor V-2 rockets. In 1949, CCTV cameras were made commercially.

What’s CCTV? How does it work?

A CCTV camera is a type of video camera that transmits a signal to a specific place on a small number of monitors. This is used to protect your home and office, but it can also be used for other purposes.

CCTV, a video system that allows us to set cameras at precise locations and capture video images, and then send these images to a monitor. Only a few people are able to access it.

CCTV cameras are the best security camera for property and public security. It can also be used to investigate or dedicate crimes. If you use them for legal purposes, CCTV cameras will be 100% legal.

You can use CCTV to protect your home. However, you will need permission.

Do you need a CCTV license?

You must inform people that you are using CCTV to monitor them for business purposes. A valid license must be obtained from the (SIA Security industry Authority).

Types Of CCTV Cameras

Below are the types of CCTV Cameras:

Bullet CCTV


Infrared/Night Vision CCTV

Wireless CCTV

CCTV Network/IP

Thermal Heat Detection CCTV

High Definition HD CCTV

More discussion:

Bullet CCTV

Bullet CCTV is a type of CCTV camera that looks like a bullet shell.


Dome CCTV cameras are the type of camera that is used in homes and restaurants.

Infrared/Night Vision CCTV

These cameras can be used in dark areas, and are easy to capture at night.

Wireless CCTV

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

Network/IP CCTV

These cameras can also be called internet protocol cameras. They allow you to send and receive data over the internet.

Thermal Heat Detection Camera

These cameras are used to detect heat and smoke. These cameras automatically turn on when they detect smoke, heat or fire. More on this topic can be found at isaimini blog.

High Definition HD CCTV

HD CCTV is a high-definition camera that can capture video at 1080p resolution.

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