The WST18 is a microprocessor control in a plastic housing with integrated up-stop-down control in the lid for pulse or dead man operation. The control is suitable for 1- and 3-phase industrial door drives with digital or mechanical limit switches. The parameters in the very extensive menu are easy to set using the programming switch (rotary/push) and the display. With the optional module (type: RM44) extra outputs can easily be added for, for example, traffic light control.