Additional Details ------------------------------ Bullet point: WHY AN ADD-ON SWITCH – Add-on switches allow GE-branded in-wall smart controls to operate correctly in multi-switch configurations. By connecting directly to the smart device, the add-on mirrors its functions. This feature allows you to dim lights, adjust fan speeds, turn fixtures ON/OFF and more based on the capabilities of the primary smart device. While the add-on switch is not a stand-alone device, it provides continued use of your favorite smart-device functions from multiple locations.