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CCTV

CCTV

(also closed-circuit television, video surveillance)

CCTV definition

A TV system where signals are monitored instead of broadcasted, typically for security reasons. The success of closed-circuit television depends on strategically placed cameras. A closed-circuit camera system is one in which the cameras are connected to monitors and/or video recorders by private coaxial cable runs or wireless communication links, ensuring that only authorized individuals have access to the transmitted data. Small black-and-white monitors with no interactivity were utilized in older CCTV systems. The screens used in today’s CCTV systems are often high resolution with features like zooming in on specific areas of the screen or following the movement of an object or a person.

CCTV types

Dome CCTV. The dome enclosure makes it hard to tell where the camera is pointing. The design confuses thieves or vandals coming from all directions.

Bullet CCTV. Cylindrical in shape and can see far. Bullet CCTVs are typically placed outdoors due to their water, dust, and dirt resistance.

C-mount CCTV. These cameras let you adjust the field of view. Detachable lenses monitor different distances. C-mount cameras are big, so they deter crime like bullet cameras.

PTZ pan-tilt-zoom CCTV. A security team can regulate what’s recorded. A button can tilt, pan, or zoom the camera lens. It’s preferable if a security guard monitors a live video feed.

Day/night CCTV. Records clear footage unaffected by how well-lit the surrounding environment is.

Infrared/night vision CCTV. Operate best in darkness because of infrared technology. Many businesses use these cameras despite their high cost.

Network/IP CCTV. Broadcast live footage online so images may be viewed anywhere. Compressing the video’s bandwidth ensures a dependable online feed. For later access, archived footage is kept on NVRs or encrypted software.

Wireless CCTV. Reduce installation time. The camera looks neater, which is vital in cathedrals, museums, and luxury homes.

Benefits of CCTV

Crime prevention. Criminals are deterred from robbing or vandalizing homes or businesses.

Remote monitoring. Modern CCTV systems allow remote monitoring through the internet on a computer, tablet, or mobile phone.

Prosecution. If a crime occurs in or around your home, the culprits are more likely to be prosecuted if there’s CCTV. CCTV footage is convincing legal evidence for identifying suspects.

Reduced insurance premium. CCTV reduces insurance premiums.

Keeping records. Keep track of when employees enter and leave your location and when shipments and visitors arrive to ensure everything runs properly.

Disadvantages of CCTV

Privacy issues. CCTV cameras record everything around them, leaving no privacy.

Vulnerability. Not all cameras are weather resistant and can break at the worst possible time due to bad weather.

High cost. CCTVs are a good investment for the safety of any house or company, but they may be expensive.

Further reading

Ultimate digital security