The WSTB220 control unit is the worthy successor to the WST18 control unit and features a membrane keypad for up-stop-down operation, allowing for pulse or deadman operation. Suitable for 1- and 3-phase industrial door openers, the control unit features six freely programmable signal relays and predefined function packages, ranging from simple to priority traffic light control. It offers simple menu navigation, detailed status information, and system diagnostics, and is compatible with all common types of position sensors. It is immediately ready for operation after setting the end position.