The full form of CCTV camera is a Closed-circuit television camera. These cameras are mainly used for video surveillance. CCTV cameras come under security camera categories. It can record a video or can produce still images. CCTV cameras are becoming popular these days as it is available in the market at a very competitive price and easy to install. Be it a school, restaurant, home, office, public places, we can easily find Cctv camera installation there.
The main part of CCTV cameras are:
- The Camera unit (wired or wireless)
- Monitor
- Recorder
- Modem
- Hard Drive
- Linking cables
The camera unit would capture the signals coming in the form of light from the area under surveillance. It will be received by a recorder via modem where these signals are recorded or saved in hard drive. We can also see the live surveillance in the monitor to keep an eye on any place. Several cameras can be interconnected to a single monitor which is located in the monitoring room.
There are many technologies in Cctv camera available in the market but the most commonly used technology is IP (Internet Protocol) Network technology. IP cameras have a sharp and high-resolution image and have the option of zoom and repositioning. It can record and store videos for many days.
If you are planning to use this technology, here are a few points to consider:
- The Form Factor: It means the type of camera unit which is best suitable for your need. There are different types of camera units available in the market like- Dome camera, Bullet camera, Box camera, PTZ Camera, and Vandal camera.
- Lens size or FOV: It is related to the focal length of the camera. If you want to capture the fine details of the area then you should go for a higher focal length lens camera.
- Resolution: This belongs to the quality of the video recorded. I would suggest rather go for HD resolution cameras.
- Infrared (IR) support: To be efficiently monitoring in low light or at night, you must go for the Cctv camera that has an inbuilt infrared feature.
- The Recorder: The video recording device should have multi-functional software. It should also support the USB drive for backup.
The popular brands for Cctv camera available in market are-HIKVISION, D3D, ProElite, MAXXLITE, CP Plus, Royallite and more.
