CDM4160 is a unit which uses Figaro solid electrolyte TGS4160 sensor to measure CO2 concentration. Applying a DC voltage to the module, an analog output voltage, proportional to CO2 concentration, is obtained. A threshold concentration can be selected to generate a control signal. The main application is in air quality control in homes, offices and factories but also in agriculture field. The M00 version has a range from 400 to 9.000 ppm.