Product review (3 stars): Works, but starts to fluctuate greatly
Ordered this for a C programming class project.  Sample code worked right away (make sure you change the defined sensor to match).  After about 12 hours of use while troubleshooting my code, the sensor started to become erratic in its readings.  When I first started, temperature and humidity would fluctuate 1, maybe 2, degrees C and 1 or 2 percent on humidity.  Now, I get swings of 5-8 C and occasional 30% humidity swings.  It still works for my project as accuracy is mostly irrelevant.  Does not appear to have long term stability.  Actual lifespan may not be very long.