Titan Controls CO2 Regulator - Compatible with Titan Controls CO2 Controller or other 120 volt controllers and timers. Precision accuracy flow meter - .5 to 15 SCF/hour. CO2 helps increase overall plant
Titan Controls Atlas 9 CO2 Controller w/ Remote Sensor
Titan Controls® Atlas® 7 - CO2 Controller | Hawthorne Gardening Company
Titan Controls Spartan Series Basic Digital Environmental Controller (Temperature, CO2 Timer and Humidity) - Aroma Grow Store