Makes it easier to maintain the recommended internal temperature for refrigerators (5-7 °C) and freezers (at least -18 °C). If the temperature is set correctly, food stays fresh for longer and bacterial growth is reduced. The thermometer helps to avoid unnecessary energy consumption and save electricity costs. It can be mounted upright, hanging or magnetically. The large digital display (50 x 25 mm) makes it easy to read. The temperature display can be switched between Celsius and Fahrenheit and there is a button to switch it on and off. Dimensions: 67 x 43 mm. Consumer tip: Temperatures of -18 degrees Celsius allow food to be stored for a long time without the addition of preservatives. Suitable batteries: CR2032, DL2032, BR2032.