Hi Robin, The sensor is located near Paris 2 meters high. The PTFE filter is almost fully surrounded by air. Indeed, we found a correlation between quick temperature changes and humidity weird values (see attached screenshot - temperature in red, humidity in blue). We also made antoher test, artificially increasing the humidity indoor at stable temperature. In this case the sensor does not deliver the same weird peaks as outdoor but his humidity value cannot exceed 60-65% whereas another sensor was giving us >80% RH.
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