Product review (1 stars): Acu-Wrong
I am very disappointed. I have tried to reset the unit three times- fresh batteries, NOT in sunlight, NOT near any heat source, NOT out of range.  The outside temp is showing nearly 40 degree difference-  it is really 60 degrees and the display unit is showing 104 and this has been over a week of trial!  ONE more time to try to reset then returning it if it doesn't become accurate.