In the modern megalopolis such simple and available device as the intercom ensures necessary safety at offices and in multifamily houses, protecting their inhabitants from undesirable visitors.
The individual intercom will be suitable for the apartments or offices having separate entrance or for country house. In this case it is worth thinking whether it is necessary to you color or rather black-and-white intercom. The price of them will differ respectively. But at first let's understand - what the intercom consists of?
1. The panel of call is the device of the small size with the microphone, the loudspeaker, attendance button, electronic payment and also availability of the black-and-white or color video camera is possible. Usually it is made of metal and anti-vandal, pogodozashchishchayushchy materials.
2. The subscriber device is tube or the video intercom installed in the apartment of the subscriber. By means of these devices the residents which are in the apartment, office will be able to ask the purpose of his visit the visitor who is he (if he is not familiar to them), and also to see the person if the video intercom is used. On each tube there is button of opening of door if on door the electric lock is put. 3. The locking device. Modern intercoms usually provide communication with the electric lock though the lock is not constituent part of the intercom but only executes team of opening of door. Possible versions of the lock: the electromechanical lock (represents the bolt which is put forward by means of electromagnet or the electric motor), the electromagnetic lock (the electromagnet holding door). In case of power outage the lock in situation.4 become "open". The door closer – the device attached to outer door. Smoothly returns door in closed position.5. of Kabel and switching. In order that the intercom has begun to function, it is necessary to connect elements of network in whole, that is to make mounting and control of network of the intercom. It is simple to collect all system for technically understanding man, but it is better to entrust this business to the professional. Especially after-sales service for work of system will be will remain, only if the intercom is installed by the master.