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For guaranteed home security, profile equipment in the form of an intercom is often required. It is quite problematic for a non-specialist to choose this type of equipment, since nowadays on the market you can find not only audio intercoms, but also video intercoms. How and what is different call audio panel is it different between you?
If we take into account the practicality and the low price component, then the real leader will be audio intercoms capable of transmitting only a person's voice to a loudspeaker or handset. In the private sector, if the verification of the person has been successful, the door is priotkryvaetsya with the help of an electric remote type lock. If such an intercom is installed in the entrance of a multi-story building, then the door is unlocked with the help of a magnetic key that every resident has. These intercoms really cost a minimum of money, have protection against vandals and last an exceptionally long time.
If it is important to radically increase security measures, it is better to connect video intercoms that are technically more advanced, which, in addition to sound, can guarantee a high-quality image in up to HD resolution on the monitor screen.
Most of this equipment is equipped with color monitors on the TFT matrix, which is valuable because it guarantees a high-quality picture a priori. And such equipment is often equipped with memory modules, in which you can connect SD cards, thanks to which the intercom turns into an electronic book - when you come home after work, you can easily flip through the photos of guests. Often the volume of internal memory is enough for more than 100 photos!
Lack of color versions - if there is a lack of lighting, the image automatically switches to black and white. The way out can be seen in the purchase of cameras with infrared illumination or the installation of additional lighting devices in front of the entrance to the house. But you can buy a version with a black and white monitor, the quality of which remains at a high level at a low or high level of illumination.
Most of the above-mentioned intercoms are manufactured in the wired segment, which requires professional installation. If you need to install an intercom quickly and on your own, then it is reasonable to use wireless intercoms that work in the Wi-Fi interface at a frequency of 2.4 Hz, which allows you to guarantee a coverage of at least 250 meters! At the same time, such equipment is equipped with a color display with a diagonal of up to 7 inches, has many melodies and a built-in battery. If the house suddenly turns out to be without electricity, it doesn't matter - such an intercom will work properly for several days on its own resources and provide the proper level of security.
