Product review (5 stars): Accuracy appears to be high
TP50 appears to be a quality unit.  Have been using it only ten days or so and cannot comment on the battery life or the length of time the unit will remain viable.  However, thus far, we are pleased with the performance and accuracy.  It continues to report the same temperature as our electronic thermostat and the inside humidity appears to not vary between 40 to 50% relative humidity that we like to maintain.  I give it four stars for this very short review period.