[edr1924]

Thanks for your reply!

Luckily I have no problems with slow response etc: when I blow on the mesh, I get an immediate response!

Also when raining, the temperature drops as expected. No heating up either: the ventilator draws the air through the sensor so it can't heat up.  

I tries other cheap sensors but personally don't like to use chinese sensors because they copy everything.
You also are not sure about the specs of the fake sensor. I did a lot of research about fakes, very interesting what you find.

So that's why I buy from sources like Digikey or Adafruit etc.
But I tried some chinese stuff: just had 2 Arduino Nano fakes which, after a few months, begun to behave strangely.

But what anyone's choice may be, have fun with it, that's the most important thing.

ooops I think Adafruit has messed up this time by selling chinese crap also... I thought they never did that...
Well I have to see what will happen to my -what seems to be- 'chinese' sensor...

bummer...