Product review (2 stars): Inaccurate - Too Low
This unit consistently understates temperatures, and more extremely so at high temperatures.

In a room where a Honeywell digital thermostat said the temperature was 72.0 degrees Fahrenheit, this unit said 70.7. In another room, where a similar Honeywell said 82.0, this unit said 80.2. At temperatures above the upper 80s, the unit substantially failed to go along. In a room where temperatures fluctuated as high as 104, this unit never went above 93.

All measurements were taken after letting the unit sit for an hour or more, in the room in question.