Looking at the HomeKit documentation for Home Assistant it doesn’t seem like this is currently possible but maybe I’m not understanding something correctly.
I have a Sonoff power switch that also has a built in temperature and humidity sensor. The Sonoff device is running Tasmota. Previously I had this running in HomeKit via a seperate install of NodeRed but I was looking to consolidate everything into Home Assistant now that I’ve had some time to set it up properly. In NodeRed, I could associate the sensors with the switch and they showed in the switch device as below:
Is it possible to do the same with Home Assistant?