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.
Instructional video for the TSI Q-TRAK IAQ Monitor CO2, CO Temperature & Humidity Logger