CCTV camera is a very essential device if security is a concern for you. It can take motion pictures and then forward the pictures to the central security board which is usually a computer on a closed circuit. It can produce images using CMOS technology or CCD chips. Since the last two decades CCTV is widely used in various government and non government institutions. Since the beginning to the current day the technology has been modified many times and with each update some new hi-tech features have shown up. The two important changes are the accessibility and its recording technique. The new generation CCTV cameras record the pictures with digital technology and then store the data in a digital form whether on a hard drive or using some other technique. The security services use CCTV devices for protecting buildings, construction sites, schools and colleges
You can get both wired and wireless CCTV cameras. Wireless CCTV cameras utilize radio signals to broadcast the image to the chief security board, and and large have their own integrated and rechargeable power supply. Wireless featured cameras are a newly launched product. It is slightly more expensive compared to general CCTV cameras. You can use it in your organization or in your home very comfortably as its installation process is very simple and it does not take much time. But it has a great disadvantage like the wireless CCTV cameras data can be effortlessly broken into or modified by an skilled expert. So it is very good to install CCTV wireless cameras for short-term observations. Wired cameras are an older version and its installation process is very difficult as you need to set up the physical wires here.
CCTV has proved to be one of the best security devices to control the crime for years. Whether for school and college security, shopping mall security, construction site security or any government and private company security you can certainly think of CCTV cameras . It is also a useful device for traffic monitoring. Now different countries use this type of cameras for transport safety. It can monitor everything and display it in a remote control room.