Product review (3 stars): ter with Alarm clock  HygrometerLCD Display Temperature and Humidity Me
Bought three of them, all three of them had different humidities, all in the same room set side by side.  So I don't know how accurate they were.  It appears to me they weren't.  The temperature was all the same, so I would say the temperature was right on.  But I wouldn't trust humidity part of it.  I do like the display, it's easy to read.  Don't know if I'd recommend this because of the difference in humidity.  Oh, and the humidity was anywhere between seven and 10 percent of a difference.