Thought these references would be of use:
- Direct Device to Device communication (DDD) . This is a particularly helpful reference as it covers the http:// calls to the various devices from the Action page of the Shelly Button1 webpage. There is also similar information posted here on this website
- Shelly Family API Overview. Useful from a developers perspective, not so sure about how helpful it is when dealing with direct calls to other shelly devices from the Shelly Button1?