9-in-1 quality monitors CO2 concentration, concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, and relative humidity in real with stable performance and high detection accuracy. 9 in 1: Multifunctional quality real- of CO2 concentration, concentration, TVOC value, HCHO value, PM2.5/PM1.0/PM10 value, and relative humidity in the.
eBay