Developed to detect the presence of CO2 in ambient air the Autopilot **APCEM** desktop CO2 monitor is smart compact and easy to use. In addition to measuring the CO2 concentration APCEM also measures the ambient temperature and the relative humidity. The high quality LCD display is clean & uncluttered. Independent CO2 RH and temperature readings. Calculates and displays ventilation rates.The Autopilot **APCEM** Desktop CO2 Monitor s built in data logger can store 48 sets of CO2 temperature and humidity over 24 hours; one log every 30 minutes. Min/max mode records the maximum and minimum concentration of CO2 since the device was last turned on and the high altitude setting allows you to compensate for specific location with adjustable altitude set points.