Handheld Digital Environmental Meter With Co2 -rh - Temperature

Building or Office Indoor Air Quality -Features & Benefits : Measures CO2 level, air temperature, dewpoint, wet bulb temperature and humidity Triple displays of CO2 level, temperature andhumidity Uses stable non-dispersive infrared (NDIR)sensor to measure CO2 Calculates, periodically updates and displays8-hour time-weighted average (TWA) of CO2exposure and 15-minute short-term exposurelimit (STEL) Backlit LCD Audible CO2 warning alarm Powered by batteries or included AC/DC adapter Manual calibration of CO2 and humidity RS-232 computer interface for uploadingreadings to a PC Min/Max memory + data hold CE and RoHS approvedSpecifications : CO2 Measurement Range: 0 to 5000ppmCO2 Measurement Accuracy: ±50ppm ±5%of readingPressure Dependence of CO2 Measurement:+1.6% of reading per kPa deviation fromsea-level atmospheric pressure (100kPa)CO2 Calibration Level: 400ppmTemperature Measurement Range:14§ to 140°F (-10§ to 60°C)Temperature Measurement Accuracy:±0.9°F (0.6°C)Humidity Measurement