Can anyone tell me what the difference is between these two light and rain sensors as having looked it up on Google I cant make any real sense of it.

I gather RLHS is Rain Light and Humidity sensor but what does the F stand for in the other.....it is Fog?

Cheers

The F vs H is German vs English;

Rain Light Humidity Sensor / Regen-Licht-Feuchtesensor

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And you can only enable rain closing if you have the earlier RLFS

 

Having had both, the RLHS seems to be much more 'accurate' for both the light and rain sensing.