A security system for controlling and/or monitoring door locking devices for escape route security having a plurality of door locking controllers, wherein a door locking controller serves for actuating a locking mechanism, which is to be assigned to the door locking controller, and having a plurality of trigger elements (10, 1010, 2010, 3010), in particular emergency buttons (10, 1010, 2010, 3010), wherein, as a result of an activation of a trigger element (10, 1010, 2010, 3010), an actuation of at least one locking mechanism can be initiated, wherein a number of door locking controllers and a number trigger elements (10, 1010, 2010, 3010) are connected to one another via a common, first bus system, wherein the number of door locking devices and the number of trigger elements (10, 1010, 2010, 3010) each correspond to a natural number of at least two, and the number of door locking controllers are assigned to the number of trigger elements (10, 1010, 2010, 3010) in such manner that when one of the trigger elements (10, 1010, 2010, 3010) is activated, only the at least one door locking controller, which is assigned to the activated trigger element (10, 1010, 2010, 3010), actuates the respective locking mechanism for unlocking purposes, wherein, as a result of the activation of one of the trigger elements, which are connected to the first bus system, not all door locking controllers, which are connected to the first bus system, are initiated to actuate the respective locking mechanism for unlocking purposes, characterized in that it is stored in each of the door locking controllers, which belong to the number of door locking controllers, to which at least one trigger element (10, 1010, 2010, 3010) the respective door locking controller is assigned, wherein the door locking controllers each comprise a first digital processing means and a second digital processing means and it is stored both in the first processing means and in the second processing means, to which at least one trigger element (10, 1010, 2010, 3010) the respective door locking controller is assigned. and having a plurality of trigger elements (10, 1010, 2010, 3010), in particular emergency buttons (10, 1010, 2010, 3010), wherein, as a result of an activation of a trigger element (10, 1010, 2010, 3010), an actuation of at least one locking mechanism can be initiated, wherein a number of door locking controllers and a number trigger elements (10, 1010, 2010, 3010) are connected to one another via a common, first bus system, wherein the number of door locking devices and the number of trigger elements (10, 1010, 2010, 3010) each correspond to a natural number of at least two, and the number of door locking controllers are assigned to the number of trigger elements (10, 1010, 2010, 3010) in such manner that when one of the trigger elements (10, 1010, 2010, 3010) is activated, only the at least one door locking controller, which is assigned to the activated trigger element (10, 1010, 2010, 3010), actuates the respective locking mechanism for unlocking purposes, wherein, as a result of the activation of one of the trigger elements, which are connected to the first bus system, not all door locking controllers, which are connected to the first bus system, are initiated to actuate the respective locking mechanism for unlocking purposes, characterized in that it is stored in each of the door locking controllers, which belong to the number of door locking controllers, to which at least one trigger element (10, 1010, 2010, 3010) the respective door locking controller is assigned, wherein the door locking controllers each comprise a first digital processing means and a second digital processing means and it is stored both in the first processing means and in the second processing means, to which at least one trigger element (10, 1010, 2010, 3010) the respective door locking controller is assigned.