Unifi Protect USL Environmental Moisture sensor marked as unavailable

The problem

I just received a USL Environmental. In Unifi Protect it shows correctly that no moisture is detected:

<img width="572" height="360" alt="Image" src=" />

But in Home Assistant, the sensor is marked as Unavailable:

<img width="887" height="644" alt="Image" src=" />

I got 2 and they both have the same behavior.

What version of Home Assistant Core has the issue?

core-2025.9.1

What was the last working version of Home Assistant Core?

_No response_

What type of installation are you running?

Home Assistant OS

Integration causing the issue

unifiprotect

Link to integration documentation on our website



Diagnostics information

_No response_

Example YAML snippet



Anything in the logs that might be useful for us?



Additional information

_No response_