Gently Used, Works like New: (V2) battery-powered dimmer switch; add more ways to control your Hue lights for everyone in your home, including kids and guests REQUIRES A HUE BRIDGE - Unlock the power of Hue and enjoy automations, control from anywhere in the world, and a secure, stable connection that won’t drain your Wi-Fi. Use Matter to connect your smart home devices to your Hue smart lighting system. ENJOY PRESET SCENES - Dims and brightens, turns lights on and off, cycles between four of your favorite scenes or provides the right light based on time of day SET UP - Mount to the wall with included adhesive, mount to a metal surface with the magnetic backing, or remove the switch from the plate to use as a remote. Open the Hue app and follow the prompts to connect the dimmer switch to your Bridge PERSONALIZE YOUR LIGHT - Customize settings in the Hue app; select the lights you want to control with the dimmer switch and personalize the settings. minimum lifetime of 3 years. It's magnetic backing even lets you attach it to the refrigerator or other metal surfaces. A Hue Bridge is required to connect the dimmer switch to your Hue set-up. The Bridge unlocks the full power of Hue smart home lighting by unlocking features like multiple room control, out-of-home control, automations and more. Enjoy reliable and secure connectivity when you add a Bridge, all without putting a strain on your Wi-Fi.