CDM4160 is a new unit which uses TGS4160, Figaro's durable solid electrolyte CO2 sensor. Due to Figaro's proprietary idea for signal processing with a microcomputer,no maintenance is required for this module. By application of DC voltage to the module, an analog output voltage proportional to CO2 concentration can be obtained. The module can generate a control signal based on a user-selectable threshold concentration. The features mentioned above make this module ideal for air quality control applications in homes, offices and factories as well as in the field of agriculture. Features: * High selectivity to CO2 * Long life * Maintenance free * Pre-calibrated * Low cost * Wide detection range * Excellent durability Applications: * Indoor air quality control in offices, homes, and factories * CO2 monitors * Agricultural applications