Slat type roller shutter, consisting of a series of slats, a support element for the slats equipped with a rotation pin being said support element for the slats composed of a shaped body for interlocking coupling with the slats and being said support element for the slats equipped with a rotation guide suitable to contain, sliding inside, a peg belonging to a chain link element of the shutter suitable to allow the angular displacement of the support element for the slats and consequently the angular displacement of the slats, being a plurality of said chain link elements mutually connected to form a continuous succession of chain link elements kept in axis sliding inside two sliding guides, CHARACTERIZED BY THE FACT THAT: said chain link element is composed of a main body suitable to contain, sliding inside, a motion transmission component of the shutter, being said motion transmission component composed of a elongated body having a through slot suitable to be crossed by said rotation pin of said support element for the slats, being said main body of said chain link element provided, on both faces (13,14) parallel to the ends of the slats, with a through hole suitable to house the said rotation pin of the said support element for the slats being said elongated body of said motion transmission component equipped in the upper part with a thrust piston adapted to press on the lower face of the elongated body of the motion transmission component contained in the chain link element being connected upwardly, being said main body of said chain link element equipped with an opening in its lower part adapted to allow the passage of said thrust piston of said elongated body of said motion transmission component, being said main body of said chain link element equipped on its upper part, with a through hole suitable to allow the passage of said thrust piston of said elongated body of said motion transmission component, and being said motion transmission component equipped, on both faces (41,42) parallel to the ends of the slats, with holes (15, 16) suitable to contain said peg facing on site towards said support element for the slats, being said peg suitable to slide inside said rotation guide of said support element for the slats, being said main body of said chain link element equipped, on both faces (13,14) parallel to the ends of the slats, with through slots (24,25) suitable to contain, sliding, said peg of said motion transmission component, and being said chain link component equipped with a spring suitable to push said motion transmission component in the direction of the lower part of said main body of said chain link element and, consequently, to keep the slats closed by means of said support element held in closed position by means of said peg of said motion transmission component, being said motion transmission elements pushed upwards by means of a motion activation component located at the beginning of the kinematic chain formed by the chain link elements, and being said activation component provided with a hollow body connected to the upper chain-link elements, inside which a sliding thrust element is provided equipped with an elongated body protruding from the lower part of said hollow body of said activation component, and said elongated body of said thrust component, suitable to rest on the threshold of the opening, and being said elongated body of the said thrust component equipped in its upper part with a piston adapted to push the motion transmission components placed in the chain link elements hooked above said hollow body of said activation element, being said hollow body of said activation component equipped on its upper part with a through hole suitable to allow the passage of said piston of said thrust component.