The Lutron Ariadni AYLV-603P-WH is a 600VA (450W) magnetic low-voltage 3-way preset dimmer designed for 120V MLV lighting loads in residential and light commercial installations. The toggle-style switch returns lights to the last-set preset level, while the slide adjusts brightness up or down for precise control. 100% factory tested; coordinating Fassada and Stainless Steel wallplates available separately. White finish.