A locking system, for a cabinet having a plurality of drawers extendably mounted in an interior of the cabinet, includes a bar and a motor unit. The bar is movable to prevent at least some of the drawers from extending out of the cabinet when in a locked position and allowing at least one of the drawers to extend out of the cabinet in an unlocked position. The motor unit is configured to drive an arm coupled to the bar, the arm being drivable to change a position of the bar from the locked position to the unlocked position.