Design and material finish: Material: Plastic. Colour: Anthracite. Additional functions / accessories: 3 x single rocker. 3 x double rocker. Smart Home: Compatible with: Philips Hue. Voice control: Amazon Alexa, Apple HomeKit, Google Assistant. Data transmission: WLAN. Protocol: ZigBee. Other: Size of the inner surface: 55 x 55 mm. Size of the frame: 81 x 81 x 17 mm. Easy installation: The Friends of Hue switch can be easily installed anywhere with the enclosed adhesive dots. Configuration of the buttons within 2 minutes with the Philips Hue app. Made in Germany: The push button is manufactured in Berlin in collaboration with GIRA & Senic. Minimalist design: The Philips Hue light switch in GIRA E2 design can be integrated into all standard System 55 switch frames. Never recharge: Thanks to energy harvesting technology (EnOcean), this Philips Hue switch is battery-free, wireless and never requires recharging. Outdoor range: Up to 300 metres. Indoor range: Up to 20 metres. Item dimensions and weight: Product weight: 0.07 kg.