Philips Hue Smart Button with Wireless Control (Installation-Free, Exclusive for Philips Hue Lights) : Amazon.co.uk: DIY & Tools
Philips Hue Smart Button - how to control multiple lights, with different options, fully customize what a button press does ( multiple things, multiple lights, multiple states, multiple rooms ) - CLN.io
Anleitung: Philips Hue Smart Button umbauen und über einfachen Taster-Schalter steuern - Smartlights.de
Philips Hue Smart Button, Smart Plug, and new bulbs: a first look - YouTube