Description Itisaqualityairqualitydetector,usingasuperiorelectrochemicaldetectionmodule,withhighaccuracy,stableperformance,canaccuratelydetectcarbondioxidevalue.Largescreendesign,youcanseethemeasurementdataclearly.Differentcolorsdisplaydifferentairquality,green400-450ppm,blue451-700ppm,Purple701-1000ppm,yellow1001-2000ppm,red2001-5000ppm.Youcanhaveatry. Features: Intelligentcarbondioxidevaluetesterusesairsemiconductor-sensortomonitortemperatureandhumidityofairquality. Adoptssuperiorelectrochemicaldetectionmodule,withhighaccuracy,stableperformance,canaccuratelydetectcarbondioxidevalue. Stronganti-interferenceability,lowconsumptionandlongservicelife. Theproductdoesnotneedcalibration,itcanbetestedafterbooting,anditcanaccuratelydetectcarbondioxide. Differentcolorscorrespondingtodifferentairquality,green400-450ppm,blue451-700ppm,Purple701-1000ppm,yellow1001-2000ppm,red2001-5000ppm. Hundredsofventilationholesatthebackofhousingnotonlyacceleratetheconvectionbetweentheairandthemachine,therebyrealizingeffectivedetection,butalsoprovideafineheatdiipationeffect. Widelyapplications:agriculturalplanting,greenhousevegetables,productionwarehouse,materialproceing,homeinterior,etc. Thereare4typesforyoutochoose,youcanchoose3in1white,3in1black,5in1white,5in1blackaccordingtoyourdemands. 3in1: Thelargescreendisplaysthepower,CO2value,temperatureandhumidity. 5in1: Thelargescreendisplaysthepower,CO2value,TVOCvalue,HCHOvalue,temperatureandhumidity. Specifications: Name:AirQualityDetector Type:5-IN-1black,3-IN-1black,5-IN-1white,3-IN-1white (optional) Battery:1*3.7V,1200mAhlithiumbattery (included) Screentype:2.8inchesTFT-LCD Material:ABS Screenresolution:240*240 Responsetime:1s Testtemperaturerange:-10to70 Humiditytestrange:0-99%RH Workingvoltage:5V/1Aadapter Maximumpower:rechargingcurrent600mA Recharging:USB Itemsize:71.2*91.6*36.5mm/2.80*3.61*1.44in Itemweight:126g/4.44ounce Packagesize:119*119*40mm/4.69*4.69*1.57in Packageweight:163g/5.75ounce PackingList: 1*AirQualityDetector 1*Cable 1*UserManual