WIRED takes a look at a 16-sensor, ... and that most 'smart' thermometers use outdated temperature-reading tech. ... "There are lots of digital thermometers on the market," she said.

If you’re someone who values precision enough to grab the commonly recommended digital thermometer, the ThermaPen at $100 or so, then another $50 might not seem like a big stretch.

To calibrate using ice water, place the thermometer stem in a bowl or glass of ice water, careful that the sensor (the tiny dimple along the side) is completely submerged.