TSI 7575 with IAQ probe model 982. Measures CO2 0~5000ppm +/-3%, temperature 0~60 degC +/-0.6 degC, humidity 0~95% +/-3% , CO 0~500ppm +/-3% and barometric pressure 517.15~930.87mmHg +/-2%. Calculates dew point, wet bulb and percent outside air. Displays 5 measurements simultaneously. User selectable logging interval and start stop times. Stores 39 days data at 1min intervals 56,035 data points. This unit also has external thermocouple measurements.
TSI Q-TRAK IAQ Monitor CO2, CO Temperature & Humidity Logger