19/06/2025
CCTV fundamentals
What is CCTV?
Closed-Circuit Television (CCTV) is a type of surveillance system that uses cameras to capture and transmit video signals to a specific place, such as a monitor or recording device.
Key Components
1. Cameras: Capture video footage of a specific area.
2. Lenses: Determine the camera's field of view and focus.
3. DVR/NVR: Digital Video Recorder (DVR) or Network Video Recorder (NVR) stores and manages recorded footage.
4. Monitors: Display live or recorded footage.
5. Cabling: Connects cameras to DVR/NVR or network.
Types of CCTV Cameras:
1. Bullet Cameras: Weather-resistant, suitable for outdoor use.
2. Dome Cameras: Discreet, vandal-resistant, and suitable for indoor use.
3. PTZ Cameras: Pan, Tilt, and Zoom for flexible monitoring.
CCTV Applications:
1. Security and Surveillance
2. Monitoring and Observation
3. Evidence Collection
Benefits:
1. Deterrent Effect: Visible cameras can deter crime.
2. Real-time Monitoring: Enables immediate response to incidents.
3. Evidence Collection: Provides valuable footage for investigations.
