Product review (2 stars): Entertaining, but not accurate
Temperature accuracy is not very good. Comparing this unit to several AcuRite 01083M Pro Accuracy monitors and some old fluid bulb thermometers, readings shown by this unit can be off as much as five degrees F even after it's calibrated. I consider that too high. I'm keeping it because the wireless remotes work reliably (just not accurately), but I won't buy another.

The outdoor remote sensor works pretty well, but if it's in sunlight the temperature will read much too high. So hang the remote unit somewhere shady.