Abstract: The invention relates to an access control system, including a control circuit, a push button that can be moved from a distal position to a proximal position, aided by an elastic element to keep it in the distal open position, a tab, configured to be moved by means of the push button, and establish the closure of the access, a locking device for locking the closed position of the tab, an access identification element that communicates with the control circuit that locks the closed position of the tab when the control circuit identifies the access element, wherein a rotating element that rotates when the push button is actuated, a clutch mechanism that transmits the rotating movement of the rotating element to a power-generating motor to power the control circuit when the push button is actuated, avoiding the use of batteries.