RI-215AINDOORCO2monitorFeatures: l EasytoreadLCDdigitaldisplayl Compact,lightweightandeasyinstallationl HighlyreliableNon-DispersiveInfraredgasabsorptionmethodsignall Recorderoutputsignall Automaticcontrolofventilationinautosandbuildingsprovidesenergyforenergysaving SpecificationGasdetectedCO2inairDetectionprincipleNDIR Non-dispersiveinfraredabsorptionmethodDetectionrange0-2000ppm,0-5000ppm,0-9990ppm,0-5.0%vol specifyonerangewhenorderingSamplingmethodInternalpumpsuctionOutputs0-10VDClinearloadresistance:Min500k 4-20mADClinearloadresistance:Max300k SpecifyeitherrangewhenorderingAlarmrange50ppm-fullscaleadjustableinstepof10ppmStandardalarmpoint1000ppm 100ppmAlarmcontact125VAC,0.5AresistiveloadDrycontact NormallyopenOperationtemp humidity0℃~40℃,10-90%RH,non-condensingPowersource24VDC 10%or24VAC 10%PowerconsumptionLessthan4VADimensionsApprox.78(W) 78H) 31(D)mmWeightApprox200gMountingWallmounting