OK. Thanks. It seems that I just have a hw issue with my sensor.
Other than that, there are many other threads about the cases with Zigbee sensors, also some are related to wifi/zigbee network design, as they are using the same frequency band (so it could be that in some more dense living area some neighbour installes some new wifi AP (or changes the channel), and it can start interferring already.
Also, might be good idea to start from Athom’s own articles, e.g.
where it is also claimed, that there can be up to 15 directly connected devices, however, some people claim to have larger networks (but is some scenarios their exact network designs are not described).
Also, might be good idea to check about changing the Zigbee RF channel before making a network reset…
Some threads:
