Product review (5 stars): Glad I got 'em!
I live in New England, with its cold and dry winters, so I bought two of these to help me keep track of the humidity in my home (I use humidifiers).  They are small and have a built-in stand.  Their temperature readings closely match those on my thermostats.  I have nothing to compare their relative humidity readings to, but they closely match one another when placed in the same room, and they respond quickly when I turn on my humidifiers or open the bathroom door in my bedroom after a shower.  I recommend them.