Refurbished - Autopilot Digital CO2 Controller Fuzzy LogicAutopilot's simple to use highly accurate digital CO2 controller has arrived. Autopilot's digital CO2 controller measures the carbon dioxide level in the grow room and automatically turns on and off the CO2 device to accurately keep the carbon dioxide PPM at the desired level. The Autopilot digital CO2 controller can be selected to operate in Fuzzy Logic mode or standard logic CO2 injection within the room. When used in Fuzzy Logic mode, the built in