The only problem with the £6 IKEA Dimmer button is ... : r/homeautomation
Teardown of IKEA Tradfri Button - YouTube
SYMFONISK / DIRIGERA Sound remote with hub kit, gen 2 smart/white - IKEA
Using the IKEA Trådfri Remote With Home Assistant - HomeTechHacker
Hacking The IKEA TRÅDFRI LED Power Supply | Hackaday
Integrate with Ikea Trådfri Gateway as bridge to communicate and control connected Ikea's ZigBee based smart lights, switches, and sensors · Issue #570 · bwssytems/ha-bridge · GitHub