Videophones ? Apartment
Apartment intercom system allows tenants not leaving the apartment to talk with the person in front of the door entrance.
On the monitor screen appears image of your visitor. If the "guest", standing at the entrance door, you know, then you are no all obstacles to open door for him. If the "guest" you not familiar, with the help of the negotiating tube, you can talk with the visitors, constantly watching screen monitor for his actions. If you wish, at any time, you can assess the situation before the front door by pressing the corresponding button on the monitor, and by removing the speaking tube, and still hear what is happening.
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