background
chart

CCTV Camera

CCTV Cameras (Closed-Circuit Television Cameras) are essential for surveillance and security, used to monitor and record activities within a specific area. They help in preventing crime, monitoring premises, and providing evidence when needed. CCTV systems are widely used in various settings, including residential, commercial, and industrial environments.

Components of a CCTV System:

Cameras:

  • Analog Cameras: Traditional cameras that transmit video signals over coaxial cables to a DVR (Digital Video Recorder).
  • IP Cameras: Network-based cameras that transmit video over Ethernet or Wi-Fi to a network video recorder (NVR) or directly to a cloud service.
  • High Definition (HD) Cameras: Provide high-resolution video, often available in both analog and IP formats (e.g., HD-TVI, HD-CVI).
  • PTZ Cameras: Pan-Tilt-Zoom cameras that can be remotely controlled to adjust the camera's direction and zoom in on specific areas.

Recorders:

  • DVR (Digital Video Recorder): Used with analog cameras to record and store video footage. DVRs convert analog signals into digital format and provide options for playback and storage.
  • NVR (Network Video Recorder): Used with IP cameras to record and manage digital video streams. NVRs offer higher resolution and advanced features compared to DVRs.

Monitors:

  • Displays the live feed from cameras and allows for real-time monitoring. Monitors can be connected directly to DVRs or NVRs, or accessed through network-connected devices.

Storage:

  • Hard Drives: Used in DVRs and NVRs for storing recorded footage. Storage capacity depends on the number of cameras, resolution, and recording settings.
  • Cloud Storage: Some modern systems offer cloud storage options for backing up video footage and accessing it remotely.

Cabling and Connectivity:

  • Coaxial Cables: Used for transmitting video signals from analog cameras to DVRs.
  • Ethernet Cables: Used for connecting IP cameras to NVRs and networks.
  • Power Supply: Cameras require power, which can be supplied through separate cables or Power over Ethernet (PoE) if using IP cameras.