This European Standard specifies the functional performances of mechanical drive systems with crank handle for shutters, external blinds and internal blinds and the supply conditions of these systems between blinds and shutters manufacturers on one hand, and operating systems manufacturers on the other, for the following four families of use: - roller shutters - venetian blinds - folding arm awnings - other awnings and blinds Excluded from this standard are gears with crank handle fitted to power operated products and used as manual override actuators.#,,#