Laird Sentrius RS1xx Series

Hi, I have the RS1xx running for some time now mounted outside. While the temperature measurement seems quite accurate, I am noticing the humidity is not in conditions of > 80%.

The RS1xx is using the Si7021 sensor and I happened to have the same sensor on a break-out board, so I wanted to compare things a bit. I went connect it with an Arduino MKRWAN1300 and put it outside next to the Sentrius.

The temperatures are almost equal:
image

But also the humidity measure are (unfortunately):
image

Those measures are from last night where we had no rain or even fog, despite that getting 100% humidity, which can’t be true. I saw the same on other days where my primitive weather station measured between 80-90% humidity.

Posting this to understand if anyone else experienced the same. The RS1xx seems to be a very well made device and would have loved to use it for some project if the measures were reliable.