LAN devices, including WiFi devices, lie in two categories:
- Those that strictly communicate with a cloud server. So any integration is dependent on the manufacturer of that device providing an API for a Hubitat developer to write an integration. When this happens, that integration woud still be a cloud integration.
- Those that communicate with a cloud server but also provide a defined local API. Hubitat developers can write an integration to control these devices locally using that local API.
An example of the first category would be MyQ garage door openers. Examples of the second category would be LiFX bulbs, Yeelights, TP-Link Kasa devices, the Philips Hue bridge, the Lutron Caseta Pro and RA2 bridges, and Shelly devices.
@adamkempenich has described a proof-of-concept approach to control SmartLife devices locally. You may wish to pursue your question further in the thread linked below:
