IKEA Tradfri wireless dimmer switch via zigbee2mqtt - Solutions - openHAB Community
OH3/Zigbee2Mqtt: IKEA TRADFRI Remote and Bulb including custom Color Scenes (arrow buttons left/right) - Solutions - openHAB Community
openHAB | Jacob Laursen's techblog
IKEA Tradfri Color Changing bulb on Hue Bridge no control of colors - Beginners - openHAB Community
Amazon.com: Wireless USB Dongle,Universal Zigbee Gateway Adapter with Antenna,for Home Assistant,Open HAB,etc,Zigbee 3.0 USB Dongle Plus : Everything Else