I have done some research into a budget home CO2/PM2.5/VOC sensor, and if you don't mind sending data to China, Cleargrass Air has awesome functionality in a ni

I have done some research into a budget home CO2/PM2.5/VOC sensor, and if you don't mind sending data to China, Cleargrass Air has awesome functionality in a nice design (plus mobile app) for about $130 https://www.google.com/search?q=cleargrass+air&ie=UTF-8&oe=UTF-8&hl=en-cz&client=safari https://www.google.com/search?q=cleargrass+air&ie=UTF-8&oe=U...