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 growth. Features heavy-duty solenoid valve. Two plastic tank washers included. Brass construction for long-lasting dependability and durability. Includes 12" of CO2 dispensing line. Powered by 6" - 120 volt grounded power cord. High quality oil-less pressure gauge. 3 Year Warranty.