I note that this has not been posted here, so for non Ecowitt/Fine Offset users I thought I would share the news about this new sensor available from Ecowitt
Its a Carbon Dioxide/PM2.5 and PM10 sensor (additionally measures Temp and Humdity in that location)
Its designed to be used primarily indoors with either a USB power source or via battery.
I have a unboxing video I made showcasing it here
https://youtu.be/TG4zMWzRPgAAnd for more information please read more on the Ambient/Ecowitt board and relevant thread
https://www.wxforum.net/index.php?topic=40245.0