I have several Aqara temperature and humidity sensors working fine.
Recently I bought a Shelly H&T to automate my ensuite fan when the humidity goes over 80%.
The problem is that every time it senses over 70% it jumps to 100%.
I tried different configurations and ran a few experiments but couldn’t find the problem until I sent logs and screenshots to Shelly support.
Their response was:-
" Shelly H&T can’t be in an environment with higher humidity than 70%. As you can see in the documentation: Shelly H&T
This can lead to the sensor becoming faulty over time."
So for me this sensor is useless.