cero sliding sashes weighing up to 1000 kg can be operated effortlessly automatically in the future: The control intelligence of the new group control unit now makes it possible to activate opening and closing commands, including unlocking and locking, via gestures, which are converted into operation commands by an optical sensor. Any desired opening and closing sequence is possible and an external pushbutton is no longer necessary. When integrating sliding sashes on higher floors, cero now also offers a transparent fall protection in the form of a glass balustrade, which is attached directly to the element. Static requirements are met by a concealed reinforcement in the profiles.