Choosing a Closed Outlet Television (CCTV) Camera is often confusing for most people. This is because CCTV products on the market have wide range of brands, types, price, technology, and quality. Furthermore, a lack of standardization in the industry also makes prospective buyers difficult to compare products from one manufacturer to another. This article is written as a guide for new buyers to choose a suitable CCTV Cameras that fit their requirements. This article explains how to make a distinction a CCTV product based on its most important attributes.
The most important attributes in a Security Camera are type of output, location of placement, minimum lights, control mechanism, and video resolution. Buyers should be thinking about the attributes to distinguish a CCTV and select this meet their requirements.
The output of Security Camera is the video signal sent by the device to a display monitor CCTV camera price in Bangladesh. A CCTV sends either Analog or Digital Output Signal.
Analog CCTV transmits a continuing stream of video over Coaxial Cable. Majority of existing installs today are still using Analog Technology although Digital Technology is getting more acceptances in the market.
Digital CCTV transmits under the radar streaming video over Twisted Pair Cable. Digital CCTV cameras are generally equipped with an Internet Protocol (IP) Address. Therefore, it is also also called IP Camera or Network Camera. By having an IP Address, the camera can be integrated easily with existing network structure.
Based on the location of placement, CCTV can be divided into indoor and outdoor device.
Indoor Device is defined inside the building. The most common indoor cameras are Dome (Ceiling) Camera and Standard Box Camera.
Outdoor Device is defined outside of the building and come across outdoor weather. Most of Outdoor CCTV is equipped with a casing to protect the it against rain, dust, and extreme temperatures. The most common type of outdoor camera is Topic CCTV. This type of camera has a waterproof casing and usually equipped with Infra-Red Led. Besides Topic CCTV, the standard box camera with additional housing is also often used as the outdoor camera.
CCTV Cameras demand a minimum lights to capture the video properly. The tenderness must fit the lights level in the room where the CCTV is. The minimum lights required by a camera pertains to minimum LUX. CCTV can be differentiated into two groups based on their minimum LUX, which are Day Monitoring and Day-Night Monitoring.
Day Monitoring Camera is used to monitor room that has sufficient lights (above 0. 5 LUX)
Day-Night Monitoring camera is used to monitor room that has low lights (below 0. 5 LUX)
A control mechanism on the CCTV camera allows the user to regulate the camera’s angle and focus. Based on the control mechanism, a CCTV Camera can be divided into motorized and fixed device.
Motorized Device has built-in motor to control the angle of view and focus remotely. It offers various types of cameras such as zoom camera and speed-dome camera
Fixed Device has fixed angle and focus that must be set hand during installation.
Another essential aspect when choosing a CCTV camera is video resolution. Video resolution is declared as Number of Television Lines (TVL). CCTV with bigger number of TVL has higher video resolution. A higher resolution CCTV will produce sharper image. However, a high-resolution camera also requires high-resolution monitor to be able to display captured images. Based on the video resolution, CCTV cameras can be divided into three types:
High resolution CCTV has over 480 TVL resolution
Standard Resolution CCTV has a resolution of 380-480 TVL
Low Resolution CCTV has 380 TVL resolution under
In order to work properly, the CCTV Camera must have a proper design and technology. The design and technology must ensure the functionality of camera in various conditions where it is located. The attributes described above are the most essential attributes for the camera to capture and to send out the video. CCTV buyer can employ the attributes as guidance to understand the classification of the products and choose the best one.
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