PowerSwitch Telekom Innovation Laboratories This device is intended as a demonstration of how to use the abstract modules defined in the HGI Core domain. The vendor has provided a proprietry module with two operations on and off. This is clearly a candidate for the module class BooleanState. The proprietry interface for turning the switch on and off. Actions for setting the state to on or off and for querying the state. Turn the switch on. Turn the switch off. Query the state of the switch. Returns the string "on" or "off". An event that indicates the new state of the switch.