A method for managing multicast traffic in a data network, and devices using said method. The label communicates with a central processor in order to receive price information for display and to report the status of the label to the central processor. The system further comprises an overvoltage protection circuit configured to monitor a peak voltage magnitude of the switch signal and to generate an overvoltage indication signal in response to the peak voltage magnitude of the switch signal exceeding a predetermined limit. The browser readable order confirmation information is comprised of order confirmation information that can be rendered by a browser.