an actuation assembly of a screen for closure , solar protection or privacy , comprising , on the one hand , a motorized actuator furnished with wireless control command receiving means and , on the other hand , a standalone power supply assembly furnished with at least one rechargeable accumulator and with a power supply connector , designed to be connected to the motorized actuator via an electric connection line for the latter to be supplied with power by the energy of the accumulator , wherein the power supply assembly comprises a man - machine interface whose activation allows the transmission of information to the actuator , this information relating to the control of the wireless control command receiving means of the actuator .