Product review (2 stars): Poor instrument if you want an accurate temperature measurement
Relatively easy to set up and sync outside sensor to inside display.
However, the inside temperature sensor reads about 6 degrees higher that true temperature - - results from placing both sensors next to each other and giving them 30 minutes to supposedly show the same ambient temperature.
Outside sensor appears to be pretty accurate.
Inserting batteries included with sensor indicates low battery level (old batteries)