WAC Lighting 12VAC MLV Dimmer External Low Voltage DimmerFeaturesInput: 12VAC, 50/60HzConstruction: Corrosion resistant aluminum alloyDimmer MUST be installed in a single-gang deep weatherproof junction box (not supplied)Always use the supplied gasket to keep water from entering the junction boxDimmer range may vary depending upon load that is appliedTransformer required