What I discovered is that if I manually change the switch in the Basic UI, I see both an ItemCommandEvent and an ItemStateChangedEvent. In this case, the http GET is sent. But if I open the door to trigger this through the DSC binding, I only see the ItemStateChangedEvent. And no http GET is sent. Does the “ON” only fire if the item receives a command and not on a state change? That must be it. And it’s at the very top of the HTTP binding documentation. It seems to be that a state change would be good for this, but I guess only commands are used.