SECURITY SYSTEMS & EQUIPMENT PRODUCTS SUPPLIERS IN DOHA, QATAR   

Security Systems & Equipment Description: If better safe than sorry is a motto you hold dear, then CCTV might be your new best friend. Invented inJune 1927 by Russian physicist Léon Theremin, CCTV was originally used by in the Soviet Union, where it wasinstalled in the courtyard of the Moscow Kremlin to monitor approaching visitors. In Germany, it was also used as a means of state surveillance, when the Nazi regime used it in 1942 to observe launch of V-2 rockets.Unlike traditional TV that openly broadcasts signals to the public, CCTV broadcasts aren't sent out to the public. Instead, they use either a wired or wireless transmission to transmit the broadcast from the video cameras to a monitor or recording device directly. Together, the system enables users to view events live, record, and archive footage for later reference. The name 'closed-circuit" to comes from the fact that access to their content is limited by design only to those able to see it. Types of cameras include dome cameras, bullet cameras, C-mount cameras, day/night cameras, and PTZ cameras.CCTV systems come in a two flavours - fixed cable/wired and wireless. In the former, a fixed cable - usually ranging in length from 25 to 500 feet - physically connects the camera to the monitor or recording device. A downside of this is that longer the cable, the lower the quality of your signal. As a result, customers usually upgrade to higher quality cables, which might prove costly. On the plus side, several cameras can be interconnected to a single monitor, g... Read More...

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