The ventilation control panel AP-N 3/6 is ideal for open and close of 24 V DC actuators by conventional activation 230 V AC (L OPEN / L CLOSE).The 24 V DC technology is the basis for a wide range of smoke ventilation actuators. An uncountable number of windows and flaps can only be opened and closed by special actuators, former developed for smoke ventilation. To use this kind of actuators easy and flexible also for natural ventilation Simon RWA has developed the ventilation control panel AP-N 3/6.