Motor control device for a closing or shutting mechanism in a building, comprising: - at least one electric motor mechanically coupled to the closing or shutting mechanism, - an electrical energy source delivering a DC voltage, - a power-supply electronic circuit for supplying power to the electric motor from the electrical energy source on the basis of control commands, - a main control circuit which is supplied with power from the electrical energy source, is linked to a first control-signal receiver and is designed to generate control commands addressed to the power-supply electronic circuit, - a remote control designed to generate and transmit control signals to the first control-signal receiver by air, characterized in that the motor control device further comprises: - an auxiliary control circuit designed to stay awake permanently and comprising a memory which is able to store a control signal, - a control-signal transceiver designed to stay awake in a receiving mode so as to receive a control signal received from the remote control and to transmit said control signal to the auxiliary control circuit which stores it, - the auxiliary control circuit being further designed to establish the supply of power to the main control circuit and to the power-supply electronic circuit after receiving and storing said control signal, - the auxiliary control circuit being further designed to put the control-signal transceiver into a transmission mode and to command it to transmit an identical copy of said stored control signal to the first control-signal receiver, - the auxiliary control circuit being further designed to put the control-signal transceiver back into its receiving mode and to inhibit the supply of power to the main control circuit and to the power-supply electronic circuit after the control commands have been executed following said control signal received on the control-signal transceiver and for as long as no new signal is received on the control-signal transceiver. - at least one electric motor mechanically coupled to the closing or shutting mechanism, - an electrical energy source delivering a DC voltage, - a power-supply electronic circuit for supplying power to the electric motor from the electrical energy source on the basis of control commands, - a main control circuit which is supplied with power from the electrical energy source, is linked to a first control-signal receiver and is designed to generate control commands addressed to the power-supply electronic circuit, - a remote control designed to generate and transmit control signals to the first control-signal receiver by air, - an auxiliary control circuit designed to stay awake permanently and comprising a memory which is able to store a control signal, - a control-signal transceiver designed to stay awake in a receiving mode so as to receive a control signal received from the remote control and to transmit said control signal to the auxiliary control circuit which stores it, - the auxiliary control circuit being further designed to establish the supply of power to the main control circuit and to the power-supply electronic circuit after receiving and storing said control signal, - the auxiliary control circuit being further designed to put the control-signal transceiver into a transmission mode and to command it to transmit an identical copy of said stored control signal to the first control-signal receiver, - the auxiliary control circuit being further designed to put the control-signal transceiver back into its receiving mode and to inhibit the supply of power to the main control circuit and to the power-supply electronic circuit after the control commands have been executed following said control signal received on the control-signal transceiver and for as long as no new signal is received on the control-signal transceiver.