Zigbee2mqtt add-on

[Hedda]

@Tinkerer

he starting point would be:

1. USB extension cable is in use for the coordinator?
2. Did you leave the channel at the default, or did you pick one clear of WiFi?
3. Did you pair all the routers first?
4. Are you pairing the end devices to a nearby router, or letting them pick?

Also read and try to follow all the tips here → https://community.home-assistant.io/t/guide-for-zigbee-interference-avoidance-and-network-range-coverage-optimization/515752