Quickly check CO₂ levels in greenhouses, offices, and industrial facilities. Large dual LCD displays CO₂ readings and alternates between temperature and humidity on the lower display; select dew point or wet bulb readings by using the mode button. Stream data to a computer or laptop through the USB output and software package. Features hold, min/max, low battery indicator, auto power off, and fresh air calibration. Take hands-free measurements by using the optional tripod (sold separately) and the bottom tripod mount.