The TGE-0010 monitors carbon dioxide levels between 0 and 5000ppm using a 'self-calibrating' infrared sensor to determine CO2 concentrations. The discreet mains powered unit can help monitor air quality in a wide range of buildings. It can help to verify that indoor ventilation systems are performing correctly, thus preventing CO2 levels exceeding recommended limits. Requires Tinytag Explorer software, and a USB cable.