CCTV: In today’s time, security has become very important for everyone. Be it home, office or public places – cameras are installed everywhere for surveillance. The most used technology among these is CCTV. But many people do not know what is the full name of CCTV and how this system works.
What is the full form of CCTV?
The full name of CCTV is Closed-Circuit Television. It is a video surveillance system in which with the help of cameras, activities at a particular place are recorded and viewed on a limited number of monitors or recording devices.
Like normal TV broadcasting, its signal is not broadcast publicly. It works only in a closed network, hence it is called closed circuit. For this reason it is used for security and surveillance.
How does CCTV system work?
A typical CCTV system mainly consists of cameras, monitors and recording devices. Cameras record video of an area and send it to a control unit via cable or wireless network.
Modern CCTV systems are based on digital technology. Their video data is kept safe in hard drive or cloud storage. There are many systems which can be viewed from a distance through mobile phone or computer. With this, the user can watch live or recorded footage from anywhere.
Special features of CCTV system
Nowadays CCTV systems come with many advanced features that further strengthen the security. They have high-resolution cameras that record clear and crisp videos. This makes it easier to identify a person or event.
Many cameras also have night vision and infrared technology, which makes monitoring possible even in darkness or low light. Apart from this, motion detection feature is also very useful. If the camera detects any unusual activity, it can send an immediate alert.
Why is CCTV so important?
In today’s era, CCTV has become an important part of the security system. It plays a big role in preventing theft in shops, monitoring traffic on the roads and maintaining security in public places. Schools, hospitals, companies and government institutions also use CCTV for monitoring and accountability. The recorded footage also serves as important evidence during investigation after any incident.
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