
A surveillance camera is a useful addition to any security system, if used for a home, office or commercial environment. There are several reasons for wanting to install a surveillance camera, not least of which is 24 / 7 monitoring for thieves, trespassers, and other intruders. It can also help you keep an eye on their children while in different parts of the house together.
How do security cameras work
Security cameras, ormore precisely known as closed circuit television (CCTV), include a sensor, also known as the charging device (CCD), and a mounting device. The sensor is what is seen affixed to walls or ceilings and are equipped with technologies to detect light and convert it into an electrical signal. This signal is then converted into images that are displayed directly on the mounting device.
Types of surveillance cameras
There are several types of surveillance cameras and each has different uses based on their different characteristics. Here are the most basic types of surveillance cameras:
Bullet-style. They can be used to produce color and black and white images and the widest angle of all types of cameras. Bullet-style cameras may be used inside or outside as they are designed to withstand the weather and other external factors.
Infrared. As the name suggests, this type ofCamera> uses infrared waves to detect and produce images with little or no lighting conditions. They are very useful in business services closed at night.
Day / Night. Unlike infrared cameras, which are useful only at night, day / night cameras are installed with an extra-sensitive chip to acquire a good outdoor pictures at any time of day.
C-Mount. The difference between C-mount cameras and other cameras is that a C-mount canuse adjustable lenses that can range from 5 mm to 50mm.
Dome. Dome cameras are popular in larger spaces such as shops or in larger offices where you want a 360-degree view of the area.
The purchase of surveillance cameras
Many things must be considered when you are planning to purchase a surveillance camera. First, decide what you are buying a camera. If you intend to put in to watch the children in other rooms,will do well with a color camera. However, if you want to put it on the porch, you might need a day night camera /, which can make images in black and white because color cameras do not work well in low light conditions. The resolution is also an important thing, and not as technical as it sounds. Resolution simply means detailed images are produced. A black and white camera produces the best quality at a resolution of 400 dpi. Anything higher than thatand additional expenses will not show much change. For color cameras, a resolution of 500 dpi or more would be great.
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