Phoenix Automatic Power Cleaning System.Voltage:230,Phase:1,Hertz:60,Amps:.39,Fully Automatic:Fresh Water for Your Evaporative Cooler Every 12 Hours of Operation.Prevents Mineral Build-Up,Can Save Over 3,000 Gallons a Mouth of Water as Compared to Bleed-Off,Reduces Bacterial Growth.Extends Pad Life.Improves Efficiency.Eliminates Chemical Additives and Cleaners.Dims:10-1/2"H X 4-1/4"W X 5-3/4"D,Outlet:1/2" with Hose, Weight:2.85 Pounds, Made in USA, Mfg/Box.