The CO100 is a desktop indoor air quality CO? monitor. This monitor measures carbon dioxide concentrations (CO?) from 0 to 9,999ppm. It also measures air temperature and humidity.
CO210 is a Desktop Indoor Air Quality CO2 Monitor/Datalogger. It Data logs up to 5333 points (Carbon Dioxide, Air Temperature or Humidity).
The CO220 Air quality CO2 monitor measures carbon dioxide, air temperature and humidity. The CO220 monitor also calculates dew point and wet bulb.
The CO240 monitor measures Carbon Dioxide (CO2), Air Temperature and Humidity, as well as Dew Point and Wet Bulb calculations.