The Sunnata Accessory Switch allows you to expand the use of your existing Sunnata (STCL-153M-xx only) and its advanced LED+ dimming technology to create 3-way and multi-location applications. This accessory switch is not for standalone use- requires the Sunnata LED+ Touch Dimmer Switch (STCL-153M-xx) to function. The Sunnata Accessory Switch allows for On/Off switching within the multi-location application, while the Sunnata LED+ Touch Dimmer Switch (STCL-153M-xx) provides the dimming. Add more accessory switches to control from up to 10 locations in a multi-location application. Tap the switch once for your favorite light level, set by your Sunnata dimmer, and twice for full brightness. The smooth fade on and fade off allows your eyes to adjust comfortably to your determined light level; push and hold for 1 seconds to activate 30 second delayed fade-to-off. No neutral required. Pairs perfectly with Lutron Claro wall plates for consistent color matching (sold separately).