Smart Design: Quartz precision and waterproof material make it very convenient to use. Lightweight and small size, it does not take up too much space in your refrigerator. Large numbers, suitable for people with poor eyesight. You can easily read the display with large bold numbers. Easy to use: There is no complicated control, it is the simplest electronic thermometer, only two buttons. Press the on/off button to turn on the thermometer, then select degrees or Fahrenheit. Temperature range: The temperature range is from -20C / -4F to 60C / 140F, providing critical temperature readings for food safety applications. Very suitable for refrigerators without temperature. When the temperature is between 4.0C / 39.2F ~ 7.9C / 46.44F, you will see a frost alarm on the screen. Magnetic Backrest, Stand and Hanging Hook: You have 3 different placement options for the room temperature thermometer. Either use the back magnet to attach it to the refrigerator door, or use the bracket to place it on the tabletop, and finally you can flip the bracket and hang it on the refrigerator shelf with a hook. Wide range of applications: the perfect thermometer for refrigerators, freezers or general room temperature thermometers. It is suitable for various occasions, such as family, restaurant, bar, cafe. It is also a great gift for family or friends.