This Z-Wave device is used as a central temperature sensor for heating or cooling solutions with multiple actuators. The measured temperature is displayed. Two buttons allow to overwrite the setpoint temperature. It can be used as Z-Wave stand alone temperature sensor or to control heating, cooling of ventilation devices. The overwrite can be terminated for certain hours. After this time the setpoint temperature will go back to the redefined value. Beside the two front buttons the device has one more button on the top side. The use of this button wan be defined by the central controller. Possible functions can include a temperature boost (heat up as soon as possible) or the activation of a energy saving mode.