Abstract: A system and a method for establishing a communication between a person wishing to access a controlled access building or area, and an addressee of that building or area. An URL address made accessible to the person is read using a multimedia electronic device connected through the Internet with a remote server having a web page corresponding to the URL address, and to a database with telephone numbers of one or more addressees. The numbers are displayed on the multimedia electronic device and, once the desired number is selected, the server establishes a telephone call between the person and the number selected of a second multimedia electronic device possessed by the addressee. The addressee called verifies the identity of the person and sends a release code which allows the opening of a gate or entrance door of the building or area.

Abstract: The invention concerns a hydraulic system for moving automatic closing apparatuses, comprising hydraulic actuating means capable to move at least one movable member coupled to at least one closing apparatus, wherein said hydraulic actuating means is operated by at least one low voltage dc motor. Preferably, the electronic unit controls, through an encoder and microswitches, the position of a piston or a rotating shaft that operates the automatic closing apparatus during closing and opening phase, favouring an automatic learning of operation times.

Abstract: The invention concerns an electronic system for controlling gate or door opening, capable to control means for moving two or more wings comprising at least one master electronic unit, and at least one slave electronic unit, capable of controlling a respective portion of said movement means said at least one master electronic unit and said at least one slave electronic unit communicating with each other through at least one two-way communication channel established between at least one first transceiver device, connected to said at least one master electronic unit, and at least one second transceiver device, connected to said at least one slave electronic unit, said at least one two-way communication channel being selected from the group comprising a wireless optical channel, a wireless radiofrequency channel, a wireless electromagnetic channel, a wireless ultrasound channel, and a power line channel.

Abstract: The invention concerns a hydraulic system for moving automatic closing apparatuses, comprising hydraulic actuating means capable to move at least one movable member coupled to at least one closing apparatus, wherein said hydraulic actuating means is operated by at least one low voltage dc motor. Preferably, the electronic unit controls, through an encoder and microswitches, the position of a piston or a rotating shaft that operates the automatic closing apparatus during closing and opening phase, favouring an automatic learning of operation times.

Abstract: A release system, particularly for releasing hydraulic actuators for automatic openings having an articulated arm for swing-door gates, provided in a hydraulic circuit having a hydraulic pump (3), operated by a reversible motor, two cylinder-piston elements (6, 7), alternatively receiving hydraulic liquid (L) from the hydraulic pump (3) through two tubes (4, 5), a valve (9, 10) being provided along the tubes (4, 5), between each cylinder-piston element (6, 7) and the hydraulic pump (3), preventing the return of the hydraulic liquid toward the hydraulic pump (3), the return being permitted only by an inverse rotation of the pump (3) operation motor, the system being characterized in that a normally closed manual opening-closing elements (11) being provided along the tubes (6, 7), connected in parallel with respect to the pump (3).