Flic 2 Smart Button Set - 3 Pack Flic 2 Buttons - Smart Home Control Buttons - Works with Hue, LIFX, IKEA Trådfri, Sonos, Spotify, IFTTT and much more - White : Amazon.de: DIY & Tools
Internet of Things buttons: a benchmark - The Geeky Gecko
Driving Yoctopuce modules with Flic buttons
Flic 2 review: Press here to turn on your smart home | TechHive