Millions of shades of white and color light: An extension light, this wall light features an integrated LED that offers millions of shades of white and color light. Power supply unit not included. Control with the Hue app: Get smart control at your fingertips with the Hue app, which lets you change colors, set scenes and effects, and more — all with a tap, and from anywhere with an internet connection. Control with voice or smart accessories: Just say the word to use Amazon Alexa, Google Assistant, or Apple Home to control your lights, or add a physical smart button for app-free control. Part of the Low-volt system: Simply plug your Hue power supply unit (sold separately) in to any standard outdoor socket to bring smart light anywhere in your yard. Use extension cables to connect more lights, and power multiple fixtures with the same PSU. Bridge required: The Bridge smart lighting hub (sold separately) unlocks the full suite of smart lighting features, including away-from-home control, automations, and more.