Inaccurate readings

I bought this - twice and returned both. It simply does not work. Following the company's instructions after calling them, set the units side by side to "communicate" with each other. Both times the units reported a 5 degree difference in temperature and a 6% difference in relative humidity and the barometric pressure was 1.8" off. In other words, two 'regular' thermometers told me it was 68; the indoor device said 77 the outdoor said 72 and they were 12" apart for 2 days. They never synched up, never agreed on temp and humidity. That happened with two different units. It just does not work. They told me it would take two weeks before the 'prediction' part would even start to work. I just find all that unacceptable, the temperature and the humidity are not something to "sort of" measure. I will qualify this by saying that their other, simpler products, like just indoor/outdoor temp. devices seem to work ok, but this 'better' model is totally worse.

. Review provider: walmart.com