測量室內二氧化碳,濕度,溫度,露點溫度和濕球溫度 ChecksforCarbonDioxide(CO2)concentrations MaintenancefreedualwavelengthNDIR(non-dispersiveinfrared)CO2sensor Measurementranges:CO2:0to6,000ppmTemperature:-4to140 F(-20to60 C)Humidity:10to95%RH Continuous(20,000sets)ormanual(99sets)datalogging Datahold,Max/MinwithTimestamp,andAlarm AutoPowerOff Easycalibrationinfreshair Completewith(6)AAAbatteries,RS-232cable,andWindows 95/98/NT/2000/ME/XPcompatiblesoftware