... :,(T90) <60s; Temperature and humidity: 1/e(63%)change ,Slow flow rates<10sVOC: 20m2 indoor, for 10ppm ethanol<1min,for flue ... :,(T90) <60s; Temperature and humidity: 1/e(63%)change ,Slow flow rates<10sVOC: 20m2 indoor, for 10ppm ethanol<1min,for flue ... LevelIP40Storage environment-40—70degree,0 --95%Size135*91*36mm CO2 meter indoor air quality VAT920