5 ms·Minimum Viable Air Quality Monitoring8 points by igor47 6y agoigor47 6y agofor folks in the bay area, i have a few extra PMS7003 devices. if you'd like to build your own one of these, ping me (email in profile) and i can leave one on my porch for you to come grab.oski 6y agodefinitely recommend taping up windows. nice to see some data to back this up.