Product review (3 stars): I was very disappointed to see they never have the same values
I ordered this 2 pack so I could keep 1 downstairs and 1 in my bedroom. Out of the package I inserted the batteries and left them side by side in the same room for a few days to check if they read the same. I was very disappointed to see they never have the same values. The temp is usually 2 degrees off and the humidity is always 8-10 percentage points off.