Product review (1 stars): Don't Buy These For "AcuRite" Temperatures!
Disappointing.  I've had one for years, then decided to get two more.  I'm only interested in temperature, but couldn't find a thermometer-only unit in a similar form factor.

I use these in degrees-F mode only, however,  the resolution might internally be in whole degrees-C only.  When the temperature changes in my office I don't think I've ever seen the display change degree-by-degree, it always jumps by two degrees.  When I place my three units side by side on a flat surface with a few inches between each unit, the two new units (which came together in the same package) usually show 2 or 4 degrees difference between them!  My old unit reads in-between the two new ones.  In contrast, I have wall clocks at home which display degrees F in tenth of degrees and show far greater clustering of temperature readings.

These things are obviously slapped together in the factory with absolutely no calibration.  With accuracy so questionable, I can't possibly recommend that anyone buy them.

In the photo the two new units are on the left, the one I purchased years ago is on the right.  They have been sitting in the same spot for days prior to this photo.