Product Information: 1Carbon Dioxide Detector: Real-time and accurate monitoring of CO2 concentration, environmental humidity and temperature, and the data is updated in real time every 1 second. 2Equipped with an Independent Sensor: Used to measure CO2, temperature and humidity, including a high-performance chip with a complex Infrared (NDIR) sensor. External temperature and humidity sensor, the data is more accurate. 3Automatic Alarm System: When the CO2 concentration exceeds 1000PPM, an alarm will be iued to notify you to keep the indoor environment ventilated in time. 4Long Standby: Equipped with 2000mA 18650 rechargeable battery, standby time can reach 720 minutes. Full-color large screen, LED digital display, intelligent backlight, soft eye protection, intuitive reading and clearer display. 5Easy to Carry: Lightweight design and small size are easy to carry and can be used directly by plugging in the USB cable. Can be placed anywhere: schools, offices, bars and restaurants, homes, cars,etc. Feature: 1.AccuratelymonitorsCO2concentration,ambienthumidityandtemperaturereal-time,Dataisupdatedinreal-timeevery1second. 2.Theproductincludesahighperformancechipofasophisticatedinfraredsensor.Withtemperatureandhumiditysensoroutside,thedataismoreprecise. 3.FeatureindependentinfraredsensorsformeasuringCO2,temperatureandhumidity. 4.WhenCO2concentrationexceed1000PPM,itgiveanalarmtoinformyoukeepindoorenvironmentventilateintime. 5.With2000mA18650rechargeablebattery,stand-bytimecanlast720minutes. Specification: Productname:MultifunctionalInfrared(NDIR)CarbonDioxideDetector Material:ABS TechnicalParameters: LCDDisplayForDataLEDdigitaldisplay DetectionMethodforCO2Infrared(NDIR) SamplingTime1Second DetectionRanges Temperature:1C-70C Relativehumidity:0%-99%RH CO2concentration:400-5000PPM MeasurementUnitsCO2concentration:PPM AccuracyRanges Temperature:0.2(0-65) Humidity:2%RH CO2:(50PPM+5%*reading) PowerSourceLithiumbatterywith2000mAhcapacity Charging5Vtype-ccharging CO2instruction0-999PPM:Greenflashing(CO2concentrationexceed1000PPM,itgivealarm.) 1000-1999PPM:Yellowflashing 2000-2999PPM:Orangeflashing 3000-3999PPM:Redflashing 4000PPMabove:Fourcolorsflashingatthesametime Certification:CE/ROHS/FCC/PSE Productsize:about137/112*80*35mm(5.39/4.41*3.15*1.38in) Productnetweight:about0.165kg PackingList: 1*Infrared(NDIR)CO2Detector 1*USBCable 1*Manual Note: Pleaseallowslighttolerancesinsizeduetomanualmeasurement,andlightinginphotographymayresultindifferenceincolorthanitisinreallife. Product Pictures: