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Also known as Closed Circuit Television, CCTV systems are TV systems that are installed and monitored for security and surveillance purposes unlike broadcast televisions, in which signals are publicly distributed. Though this is an old technology that has been around for years, there have been significant advancements in CCTV displays over time.
In comparison to old Closed Circuit TV systems that had low resolution and small black & white monitors without any interactive capabilities, the modern day CCTVs are coloured and have high resolution displays and more importantly, are loaded with impressive features that help ensure top notch security of the premises. Some CCTV systems feature the zoom in facility. This means you can zoom in on the image and track any mysterious activity on the screen and take action immediately, which otherwise may be difficult to observe on old and black & white display screens.
CCTV Surveillance System come in different styles. However, the most common and popular styles are dome, infrared, c-mount and bullet.
Bullet CCTV cameras are quite popular across industries. They come in both coloured and black & white. Additionally, they also feature all the necessary mounting hardware that is needed to install them in your premises. They are mostly fixed with 6mm lens at about 30 feet and offer 56° view. The 6mm lens is excellent to view facial features.
For security at night, infrared CCTV security systems are a better option as compared to bullet CCTVs. This is because infrared CCTVs allow images to be seen in areas with little or practically no lighting. They can be installed both inside and outside. They are built in with infrared LED lighting which is installed on the outer-edge of the camera’s lens which enables users to see in the dark. And this is exactly why the infrared systems are popularly known as Night Vision CCTV systems.
As the name suggests, this is a dome shaped surveillance camera mostly used in stores and offices. In general, these cameras are used inside the building. They feature high quality CCD sensor and 420 lines excellent resolution. Furthermore, it also comes with an adjustable lens.