Product review (3 stars): Good signal from the courtyard all the way into the ...
Works ok.  The low end humidity is inaccurate, but I have never owned one that was.  Good signal from the courtyard all the way into the basement.

Later review, half a year later.  It is a hot summer in Texas, showing at least 95 during the day.  But, I started noticing that the temperature in my courtyard is far higher than the local weatherman says.  Bringing the sender unit into the the basement, I discovered that it was still 95 degrees, rather than the 75 that my old analog thermometer claims.

Went bad apparently.  Inside temp still work, though.