Attributes . +/-(100 ppm +3% Of Reading) CO2, +/-(50 ppb + 15%) tVOC's, +/-0.100 in. WC Pressure, +/-2.3 Degrees F Temperature, +/-2.3 Degrees F, +/-5% DP, +/-25% for Greater Than 100ug/m3 PM10, +/-25ug/m3 for Less Than 100 ug/m3 PM2.5, +/-5% RH . Names