The fact that the installation of a modern intercom can significantly improve the quality of life of residents of the entire entrance, no doubt arises. Since installation, all the residents of the entrance are calm for the cleanliness of stairwells and the elevator, let guests with one button, and not go down to the entrance and so on. When choosing a device and placing an order, it should be borne in mind what the total cost of installing an intercom is made up of, which all residents of the entrance pay for the liner. Depending on whether the replacement or refinement of the door is its cost is the first estimate point. The telephone that is installed in each of the apartment apartments. Depending on the selected model of the intercom, communication can occur in audio or video mode. At least three keys to the entrance door are allocated for each apartment. The amount received as a result will be the basis of the estimate, based on which, you can get a reliable idea of how much the intercom costs. Of course, the total amount, in addition to the cost of a set of equipment, includes the cost of installation services, which is determined by the managers of the company that is engaged in the installation of intercom.