The ETL-listed Blueprint Controllers® Digital CO2 Controller, BDCC-1 precisely controls a 120-volt CO2-generating device. The controller allows CO2 set points from 350 to 2,000 ppm with an accuracy of ± 50 ppm. A remote sensor on a 15-foot cable accurately monitors CO2 levels, and Fuzzy Logic mode allows even more precise control of CO2 levels when using compressed CO2. Photocell control with adjustable sensitivity allows the controller to operate during the day, at night or continuously. This controller includes a three-year warranty.