I was a bit worried seeing other reviews, but I'm glad I made a purchase. Plugged into raspberry pi 3 b+, and followed instructions (homeautomation). I was able to successfully pair it with Ikea Tradfri bulbs and dimmers. Delivery took about a week to UK, so faster than promised. Overall very happy with a purchase.
This device is currently deployed with 'Home Assistant' - through a RPi3. Works perfectly as described - tones of support from the elelabs team. They gave me documentation (for 'Home Assistant') and the works which made it really plug and play (minus the stuff you need to do to pair, add and etc devices). Currently using a couple XIAOMI devices. While support is still in progress I am getting great results on what i have tested. Also extremely quick shipping.