Product review (1 stars): You get what you pay for
This humidity monitor is not accurate.  At *best* it reads about 10% to 15% wrong, in my case I have it sitting next to a good hygrometer that's currently displaying my indoor humidity at 8% (I live in Las Vegas, this is normal).  The Vicks unit is telling me that I have 25% humidity.  But it's so inexpensive, I don't think it's even worth taking the time to return it!