Compatible with Titan Controls® CO2 Controllers or other 120 Volt controllers and timers. Precision accuracy flow meter - 0.5 to 15 SCF/hour. Features heavy-duty solenoid valve. High quality oilless pressure gauge. Includes two plastic tank washers and 12 ft of CO2 dispensing line. Brass construction for long-lasting dependability and durability. 1 Amp/120 Volts/60Hz.HIDROPONICO