Emergency call system and electric door for multiple housing buildings. (Machine-translation by Google Translate, not legally binding)

摘要

Emergency call system and door entry system for multiple dwellings characterized essentially by the fact that the various housing units include call and communication devices, one of which comprises a so-called acoustic warning device, an electrical connection device for making the emergency call and a electrical intercom telephone set, the warning devices being connected in parallel on the one hand with an electric doorphone pushbutton circuit circuit for the conventional call and on the other hand with switching means for carrying out the emergency call in response to the actuation of one of the telephone devices of the latter connected to the electric doorphone board through switching means able to cancel their operation in response to work in the system alarm state. (Machine-translation by Google Translate, not legally binding)