Perfect for the fridge: the temperature range is -20C to 60C, which allows you to use it in the fridge. The frost alert will appear on the screen, when the temperature is between 4C and 7.9C. Simple design: The large black numbers on the LCD display are highly visible. You can easily read on the screen. Simple to use: This is a very practical thermometer with only two buttons. Upper button is on/off switch, lower button is for Celsius or Fahrenheit selection. to any other medium you want. In addition, there is a magnet on the hook, which means it can stick on the steel element, very practical. Wide applications: Perfect thermometer for the fridge, freezer or as indoor thermometer. Suitable for home, restaurants, bars, cafes.