Matter protocol support would also be a useful feature.

Potential integration: Run HVAC fans and/or an attic fan and/or a crawlspace fan if indoor AQI is worse than outdoor AQI

This says that Air Quality Sensor support was added to matter protocol in 2023: https://csa-iot.org/newsroom/matter-1-2-arrives-with-nine-ne... :

> Air Quality Sensors – Supported sensors can capture and report on: PM1, PM2.5, PM10, CO2, NO2, VOC, CO, Ozone, Radon, and Formaldehyde. Furthermore, the addition of the Air Quality Cluster enables Matter devices to provide AQI information based on the device’s location

/? matter protocol Air Quality Cluster: https://www.google.com/search?q=matter+protocol+Air+Quality+...