Want to buy not expensive CCTV cameras and do not know what to choose? It does not matter after reading this short article you will be able to understand for himself what the basic parameters to pay attention when choosing a CCTV camera.
so, in Ukraine are selling a lot of different brands of video surveillance systems. 90% these brands is not exactly a quality China. After all, China China strife, externally identical camera may assembly and quality vary the picture quality is very greatly. so, that would be a long time not to tell what is better and what is worse, we strongly recommend that you opt for 2 producers, which are considered world leaders in the field of video surveillance. It is a manufacturer and producer Dahua Hikvision, It is among these 2 brands, it makes sense to choose a video surveillance system. Both companies are engaged in professional video surveillance from the end of the 90s.
Exist 2 video standard. The first and most popular – an analog video surveillance, a second standard – This ip video surveillance. Analog cameras connected via a coaxial cable or twisted pair cable directly to the DVR, ip surveillance camera connected to a computer through a WLAN router or a switch, and only after that connect to the DVR over the LAN.
The two standards have both pros, and cons. Among the advantages of analog video monitoring can be called the price and ease of use and connection, Among the shortcomings can be called less flexible video surveillance system. Among ip plus systems can be called a great versatility of video surveillance systems.
To date, the analog video surveillance systems do not stand still and already have a surveillance camera with a resolution of the matrix 5 megapixels, that allows you to get a picture FUUL HD standard. HD video transmission standard at Dahua company called HD-CVI, from Hikvision is called HD-TVI. Both standartabyli designed to transmit images with high detail using a conventional analog signal. Most popular on camera today with resolution 2 megapixel, it is enough and sufficient for standard video surveillance systems. Catalog HD-TVI video surveillance cameras You can see here.
When choosing a camera just need to pay attention to the lens focal length, considered a standard lens 3.6 mm, a camera angle approximately 80 degrees. As there is a lens 2.8 mm, where the angle of view 90 degrees. When choosing outdoor surveillance cameras look out for IR illumination at night. Standard infrared illumination operates at a range of 20 meters at night.
As the price of CCTV cameras, the dome camera, which puts the inside with a resolution of premises 1 Megapixel price starts at 20 u.e. Street in a metal case from 25 u.e. With the quality of image 2 Megapixel price starts at 25 ue to the dome and from 30 for street. Большой выбор камер видеонаблюдения всегда Вы можете найти в интернет магазине «контур сб».
