Hi,
I got one of this smoke detectors too, for testing and realized that I have a really bad LQI.
I get around 135 if I place it next to the Sonoff 3 Zigbee dongle I am using, but as soon as I move to the next room, or just place it at the other site of the room (2-3 meters) it drops down to 50-40.
I also verfied my Wifi Channels, so that this there is not interference, but nothing changed. Is this normal to have such bad link quality for those smoke detectors?
Thanks