Intercoms. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Intercoms. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Security and safety. Audio and video surveillance

Intercoms are widely used at the present time. Their isolated position among various means and security systems is determined by the combination of audio and video control functions, as well as remote control of access to the facility. With the help of an intercom, you can identify a visitor by voice, by image and, without approaching the front door, let him in.

Practice shows that most cases of fraud, robbery, robbery, related to the taking of property of citizens and encroachment on their life and health, are committed after the victims themselves voluntarily opened the doors. The intercom acts as a link between the owner of the apartment and the visitor, allows you to find out everything you need at a safe distance and make a decision about admission to the house or blocking the door. A wide range of audio and video intercoms is presented on the modern Russian market. Most of them are made by foreign manufacturers who have been specializing in the production of such products for decades and continue to constantly improve. The buyer should be attracted not only by the carefully selected design of the intercom, but also by its functional qualities. Not every beautiful plastic box that contains a complex mechanism can last a long time in harsh climatic conditions. Manufacturers take into account the peculiarities of the Russian market and develop more and more reliable devices that are designed to withstand not only the onslaught of weather conditions, but also the influence of external destructive forces, and simply put, under the blows of hooligans.

When choosing an intercom, it is necessary to take into account not only the excellent design, but also its reliability, adaptability to the conditions of the upcoming work, and, most importantly, the cost. It must be remembered that expensive does not always mean high quality.

By carefully choosing equipment, manufacturer or supplier, thinking through the issues of long-term operation and maintenance, you can avoid unnecessary costs.

Author: Korshevr N.G.

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