Philips Hue Smart Dimming Kit (Installation-Free Exclusive for Philips Hue Lights Works with Alexa Apple HomeKit and Google Assistant) Works with Alexa for voice control (hub required, Alexa device and hub sold separately). Quickly dim or brighten up to 10 lights for games, parties, and movies from the comfort of your couch or bed. Start your Philips Hue experience with the included A19 LED Smart Bulb. Requiring the Hue Bridge (sold separately) for the full Hue experience, this battery-powered dimmer with remote smoothly and wirelessly adjusts your lights' intensity without any added installation. Mount the Hue Dimmer Switch anywhere with screws or adhesive tape (both sold separately) and control using the remote or the Philips Hue App with the Philips Hue Bridge. Make it part of your Hue home lighting system with Hue accessories (sold separately) such as the Hue Tap or Hue Motion Sensor. Control by voice with Amazon Alexa, Apple HomeKit, and Google Assistant.