Yes I probably bought the same ones years ago. Wrapped in sealed
bags. I just tried using one in my bathroom.
They are not reliable near the extremes. You cannot set it to 80 % hummidity.
The horse hair mechanism is too critical up there. I was able to set it
to about 60%, and one rainy day it just came on. i mounted it uo in the air
box which I had taken out the fan and used an in-line fan for noise control.Its
works OK with the Dew Stop condensation sensor,
but I really need more CFM.
Most mechanical sensors have the wrong connection for fan use.
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