Patent ID: 7091687

Claim:
An electrical system for controlling at least one gate or door moved by means of at least one corresponding electric motor, said electrical system comprising: a) an electric network consisting of two electric wires adapted to allow distribution of power supply and digital information; b) a central control unit having two terminals adapted to be connected respectively, but indifferently, to said two wires of said network in order to transmit direct-current power supply and to transmit and receive digital information; c) three or more peripheral units, each having two terminals adapted to be connected respectively, but indifferently, to said two wires of said network in order to receive direct-current power supply and to receive and/or transmit digital information; wherein one of said peripheral units is adapted to be electrically connected to an electric motor for controlling operation thereof; wherein one of said peripheral units is adapted to be electrically connected to a device for entering requests of movement of the gate or door; wherein one of said peripheral units is adapted to be electrically connected to a safety device for the gate or door; wherein the transmission of digital information from said central control unit to said peripheral units takes place in voltage form; and wherein the transmission of digital information from said peripheral units to said central control unit takes place in current form.