Clack WS1 AC Adapter 120 volt 12 volt pn V3186 - V3186 clack Transformer The power supply for the Amanzi Clack control valve, The 12Volt Clack Transformer is the power supply that plugs into the microprocessor Board WS1 AC Adapter 120 volt 12 volt pn V3186 - V3186 clack Transformer WS1 AC Adapter 120 volt / 12 volt pn V318