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Low cost Zigbee GU10s via Ikea (UK)
(www.ikea.com)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
I second this statement. Most of my bulbs are IKEA. I have 4 floors and my ZigBee dongle is on the ground. If they weren't repeaters, my Aqara motion sensors wouldn't be working, but they do!