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Types of Surveillance
Ensuring that you choose the right surveillance cameras will go a long way in making sure that your premises are secured well. It is important for you to know the differences of each type of surveillance camera to best suit your business. Surveillance cameras normally differ in terms of technologies used on them. The quality of video output also plays a great role in differentiating the different types of cameras. Among the most popular types of surveillance cameras include:
These are the most common surveillance cameras probably due to the fact that they are much cheaper compared to other forms of surveillance cameras. Analog cameras are the oldest form of surveillance cameras. The picture quality you can get from analog cameras isn't the greatest, being restricted by the NTSC format allowing for only 720×575 resolution. They are wired with coaxal cable and power. The only benefits of having analog cameras are that they are low cost cameras. The cost of acquisition and installation are low as compared to those of IP and HD cameras.
HD cameras provide operators with the ability to zoom in on images with clarity that cannot be obtained using other surveillance cameras. This type of surveillance camera came as a replacement to the older analog cameras that were tube-based. These cameras also have the ability of transmitting images over HD CCTV. HD cameras are simply cameras with higher resolutions or high definition. Compared to the traditional analogue CCTV cameras, the HD cameras are able provide more details and have a wider coverage. This makes them perfect cameras to be used as surveillance cameras. The HD cameras provide a resolution at least 3 times better than that of an analog CCTV video camera. When choosing a surveillance camera, the camera resolution should be an important factor to consider. With a higher resolution you will be able to zoom into video much more without as much quality loss on conventional analog cameras.
IP surveillance cameras are also known as Network Cameras. These suveillance cameras send images over a network. They normally do this by compressing the images to reduce strain on the network before transmitting them. Many IP cameras are easy to wire as they only require 1 cat 5e or cat 6 cable due to their PoE (power over ethernet) capabilities. Although both analog and IP surveillance cameras serve the same purpose, that of transmitting signals, IP cameras can use hubs, switches and routers that lets them have an expanded range. In addition, the cameras have built-in encryption to ensure security of signals during transmission.
Analog Surveillance Cameras
HD Surveillance Cameras
IP Surveillance Cameras