The actuator heads can be easily fastened, replaced or turned in 90o steps with four captive screws. The switching inserts can be removed after opening the screw-free cover – simplifying installation. With these features, steute aims to make its ES/EM 97 series universally applicable throughout the automation industry. Accordingly, it has a wide range of actuators (various fulcrum levers, roller levers, spring rods...) and dimensions to EN 50047, the prevalent standard for automation technology.