If you want to measure humidity (and temperature ... electron microscope to figure out what’s going on. The other sensors were fine, with the HTU21D and SHT71 being standouts for their ultra ...

Panasonic's SN-GCQB1 laser-type air quality sensor. The air quality sensor accurately measures temperature, humidity, particulate matter, TVOCs, and eCO2. Suitable for indoor and outdoor monitoring, ...