Apex Grow Carbon Dioxide Gas Regulator for 120-volt Timers and Controllers Regulates flow of compressed CO2 from 0-15 cu ft/hr, Compatible with timing devices and CO2 controll Features solenoid valve and tank pressure gauge, Connects to CGA320 tank valves Includes two plastic O ring washers and 10' x 3/16" black tubing, 120V power cord with grounded plug Working Pressure: 50 psi, Maximum Input Pressure: 4000 psi Input Voltage: 120V, Maximum Amperage: 5.5A, One Year Warranty