Closed Circuit Television(CCTV) is the use of video cameras to transmit a signal to a specific place on a limited set of monitors. CCTV comprises of camera, wires, monitoring screen, recorder. It may employ point to point, point to multipoint or wireless links.

1. CLOSED CIRCUIT
TELEVISION(CCTV)
SYSTEM

2. CCTV?
✔ Closed Circuit Television(CCTV) is the use of video cameras
to transmit a signal to a specific place on a limited set of
monitors.
✔ CCTV comprises of camera, wires, monitoring screen,
recorder.
✔ It may employ point to point, point to multipoint or wireless
links.

3. Elements of CCTV:
✔ Camera
✔ Lens
✔ Monitor unit
✔ DVR/NVR
✔ Cable(Coaxial/Ethernet)
✔ Storage devices
✔ DC power supply(12V)

4. CAMERA SELECTION:
✔ Indoor camera
✔ Outdoor camera
✔ Dome camera
✔ Bullet camera
✔ Hidden camera
✔ Infrared Days/Night
camera
✔ Pan tilt zoom camera

5. TYPES OF LENS:
There are two types of lenses
✔ Fixed lens:
Fixed lens are those lens where
the lens size doesn’t change, we can do
is focus, we can’t zoom in or zoom out.
✔ Varifocal lens:
Varifocal lens size can be

6. MONITOR UNIT & VIDEO RECORDERS(DVR/NVR):
MONITOR UNIT:
✔ The function of monitors is
to display video images for
viewing.
✔ Monitor selection is
important for quality of
images based on size and
pixel.
✔ It also includes LCD and
LED displays.
VIDEO RECORDING:
✔ Video recorder is at the
heart of the CCTV
installation.
✔ Video recording is of two
types
✔ Digital video
recording(DVR)
✔ Network video
recording(NVR)

7. Cables and Connectors:
CABLES:
✔ CCTV can be analog or IP
based.
✔ Depending on that cables
can be coaxial cables or
Ethernet cables.
✔ Cables connect the camera
with the DVR/NVR.
✔ VGA cable
✔ HDMI(high definition
CONNECTORS:
✔ BNC connectors:
A type of connector used
to connect coaxial cables.
✔ RJ 45:
A type of connector used
to connect Ethernet cables.

8. Types of CCTV camera:
✔ ANALOG CCTV SYSTEM:
Analog security camera capture an analog video signal and
transfer that signal over coaxial cable to the Digital Video
Recorder(DVR).
✔ DIGITAL/IP CCTV SYSTEM:
IP stands for Internet Protocol and basically refers to a digital
video camera that can send and receive data via a computer network.
Requires Network Video Recorder(NVR) for recording.

9. STORAGE DEVICES:
✔ Hard disk drive or HDD need
to store the CCTV camera
footage.
✔ It help to review the CCTV
footage.

10. Use of CCTV camera
✔ Reduced cost
✔ Prevent crime
✔ Increase customer
confidence
✔ Easy to implement
✔ Prevent safety incidents

11. APPLICATIONS:
✔ Cash rooms
✔ Shop
✔ School
✔ Football and cricket
camera
✔ Swimming pools
✔ Car park
✔ Reception areas
✔ Historic places
✔ Hospitals

12. Types of CCTV and it’s
applications

13. 1. Dome CCTV Cameras
This is the best type of CCTV camera for shops,
restaurants, casinos and hotels because the design allows
you to monitor a wider angle at your premises. Many also
consider this option to be the best indoor CCTV camera
as it can be placed on a strategic point of the ceiling to
cover all angles of the room.

14. Dome CCTV camera

15. 2. Bullet CCTV Cameras
Bullet cameras can be used to good effect in a range of
industries such as manufacturing, property management
and farming. They not only record good quality pictures
but also send out a message to passers-by that your
premises is under surveillance. That’s why they have
traditionally offered the best CCTV for outside operation.

16. Bullet CCTV camera

17. 3. C-Mount CCTV Cameras
This is the ideal camera for observing a stretch of road on
the approach to your premises. It is therefore popular in
the utilities and logistics industries. Those operating in
the food and manufacturing industries may also elect for
this option, due to the camera’s reliability in extreme
temperatures.

18. C-Mount CCTV camera

19. 4. PTZ Pan Tilt & Zoom Cameras
Popular in large retail environments and is regarded as the
best CCTV for business premises that have a specific
valuable object to protect. For example, a museum could
program the camera to pan to a particular entry or exit
point when it detects movement. So even when it is not
being controlled remotely, the camera can cover a much
larger area and do the same job of several static cameras.

20. PTZ pan tilt and zoom camera

21. 5. Day/Night CCTV Cameras
There are various CCTV camera types suited to outside
use but the extra sensitive imaging makes this one
unique. It is therefore the ideal CCTV system for business
premises that require round the clock CCTV monitoring
in an outdoor environment with varying light conditions.

22. Day/Night CCTV Camera

23. 6. Infrared/Night Vision CCTV Cameras
This is the best CCTV camera for night vision
functionality. It’s therefore the ideal choice for those who
need ultra-reliable recording in complete darkness. For
example, banks, farms and manufacturing plants.

24. Infrared CCTV camera

25. 7. Network/IP CCTV Cameras
A network or IP CCTV camera is the ideal choice for
business owners who are often away from site and on the
move. Footage can be viewed from anywhere in the
world, via a PC, laptop or mobile phone.

26. Network/IP CCTV camera

27. 8. Wireless CCTV Cameras
If a spotless presentation is important in your industry,
wireless CCTV cameras are a great security option. Their
discreet appearance helps them to blend into the
interior. What’s more, there is less set up and camera
maintenance required, and footage is transferred via the
internet for convenient access.

28. Wireless CCTV camera

29. 9. High Definition (HD) CCTV Cameras
High definition cameras are particularly useful for use in
environments where there is a high risk of theft.
Businesses such as banks and casinos should opt for HD
cameras, in order to ensure that visitors to their premises
are captured in perfect clarity. The footage recorded will
be able to provide undeniable identification in the event
of a crime being committed.

30. HD CCTV camera