An actuation assembly (INST) of a screen (SCR) for closure, solar protection or privacy, comprising, on the one hand, a motorized actuator (ACT) comprising wireless control command receiving means (RCU) and, on the other hand, an autonomous power supply assembly (PWU) comprising at least one rechargeable accumulator (BAT) and with a power supply connector (PR), for the connection to the motorized actuator (ACT) via an electric connection line (LIN), through which the actuator can be power supplied by the energy of the accumulator (BAT), wherein the power supply assembly (PWU) comprises a man-machine interface (MMI) whose activation allows the transmission of information to the actuator, this information relating to the control of the wireless control command receiving means (RCU) of the actuator (ACT).