Product review (5 stars): Great little tool for temp and humidity readings
As a Mechanical Engineer working in the HVAC industry, I am constantly trying to analyze performance of system.  Part of this analysis is to measure temperatures and humidity in areas.  This little pocket temp/humidity pen is the perfect tool.  It's accurate and quick.  The price was good also.

I recommend this to anyone who needs an inexpensive tool to measure room temperature and relative humidity.