| 摘要 |
An apparatus for remote opening of doors or gates of at least a building is disclosed. The apparatus comprises a plurality of units (B1 to Bn) located in a respective plurality of buildings and accessible from a plurality of external terminals (C1 to Cn) provided with a GSM module. The units are connected to electromechanical means suitable for opening and closing the doors or gates and each of the units comprises a database containing the list of the telephone numbers of the plurality of external terminals, a GSM interface (3) for connecting to the external terminals and means (3) for managing the interface and the database (20). The managing means is interrogatable by the external terminals and is suitable for commanding the electromechanical means for opening gates or doors if the telephone number of the interrogating external terminal is on the list of telephone numbers of the external terminals of the database. The apparatus comprises a central unit (1) comprising a memory provided with a database containing the list of the units located in the buildings and the list of passwords associated with the units located in the buildings and is suitable for activating the units, an interface (31) for remote connection to the units located in the buildings, a GSM interface (30) for connecting to the external terminals and means (40) for managing the interfaces (31) and the database (20). The managing means is interrogatable by the external terminals by means of sending a password and is suitable for checking whether the sent password is on the list of passwords of the database and, if the checking operation has been positive, is suitable for storing the telephone number of the interrogating external terminal and for sending data to the units located in the buildings. The data contains the telephone number of the interrogating external terminal and the validity period of the door or gates opening service.
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