【Anti-freeze alarm function】 When the temperature is too low or too high, a frost symbol will be displayed on the refrigerator thermometer screen. Abnormal temperatures are easy to spot. Easy to use: Simply press the on/off button to turn on the thermometer and select Fahrenheit or Celsius. 【Digital refrigerator thermometer】 This digital thermometer uses precise calculations to measure temperatures from -20 ° C / -4 ° F to 60 ° C / 140 ° F. High accuracy (±1 ° C / ±2 ° F). 【3 installation methods】 The freezer thermometer can be vertical, suspended or magnetically adsorbed. So you can choose from three ways to place it and use it anywhere. Size: 67 * 43mm