Product review (5 stars): Excellent product.  Been working for over a year.
I installed this meter in a utility room to monitor temperature and humidity.  It came well calibrated.  I performed a salt water vapor test to confirm that it was correctly sensing the humidity.  It was also compared to a digital thermocouple meter and a mercury meter for temperature calibration.  It was within a degree F of each.  Although I don't use the max. alarm, I did test it once and it worked.  The flip out stand is rather flimsy.  The battery lasts about a year.  It is easy to read from a distance.  I would buy another if I had another location to monitor.