The user can choose from a wide range of TÜV certified emergency-stop buttons of Schlegel for panel cut-outs of different shapes and dimensions (16.2 mm, 22.3 mm, 30.5 mm) which can be combined with both, the standard and ASi contact units. The actuators are well-known for their modern and attractive design combining mechanical robustness and outstanding functionality, featuring e.g. a clearly visible switching position indicator, a twist release (in either direction) or pull release and tightness from IP65 up to IP69K, depending on the model.