Smart Dimmer Accessory, Single Pole/3-Way Preset, Multi-Load. The Multi-load Smart Dimmer provides smooth, full-range digital dimming for Incandescent, Halogen, Electronic Low-Voltage, Magnetic Low-Voltage, Dimmable LED/CFL and Fluorescent lighting. In addition, an Accessory Dimmer is included in the product series for multi-location control for up to 5 locations. This line offers a combined Single-Pole/ Multi-Location unit for nearly all lamp loads. All Smart Dimmers are compatible with any decorator designer-style wall plates.