Digital ThermometerMeasuring temperature range is from -50 to 70(-58~158) with an accuracy of +/- 1, and you could change the unit of temperature through "/" button, very easy and convenient. Max Min FeatureIt has a maximum/minimum temperature memory, two alarm settings(high/low temp alert) and features a audible alarm. 3 Mounting OptionsMagnet, Key Hole or Flip Down Stand. You could choose one way to place them when you measuring the temperature. Easy to ReadWith a large data reading window and clear LCD display numbers, you could read the data fast and accurately. You can toggle from indoor room to refrigerator/freezer Temperatures freely by pressing the "Room/Fridge" button. FeatureComing with a long wire sensor and a solid-state probe, the probe is highly sensitive, so it could measure accurately. Perfect for measuring temperature in refrigerator, freezer, indoor room etc. Powered by 1pc AAA battery(not included) with lower power consumption.