Device for opening and closing an outwardly opening pivoting wing

A device for opening and closing an outwardly opening pivoting wing, comprising:

• an actuating device including a base and a toothed member rotatable with respect to the support and driven into rotation by a control device;
• and
• an arm having a toothed portion including a circular toothed portion and a straight toothed portion, wherein the toothed member cooperates with the circular toothed section to swing the arm between a closed wing angular position and an open wing angular position, and vice versa, and wherein, in the closed wing angular position, the toothed member cooperates with the straight toothed portion of the arm for moving the arm along a straight direction between a locked wing position and an unlocked wing position, and vice versa, characterized in that the support and the arm cooperate with each other by means of a guide system comprising a first, a second and a third pin-slot coupling, wherein the first pin-slot coupling comprises a first straight slot that guides a respective first pin along a straight path, wherein the second and the third pin-slot coupling comprise a second slot and a third slot, respectively, which guide a second pin and a third pin, respectively, wherein both said second slot and third slot comprise a straight portion and a circumference arc portion with the center on the axis of said first pin.