Makes it easier to maintain the recommended internal temperature for fridges (5-7°C) and freezers (min. -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. Thermometer for standing, hanging or magnetic attachment. Large digital display (50 x 25 mm) for easy reading. Temperature display can be switched between Celsius and Fahrenheit. Button for switching on and off. Dimensions: 67 x 43 mm. Consumer information:. Temperatures of -18 degrees Celsius allow food to be kept for a long time without the addition of preservatives. Suitable batteries: CR2032, DL2032, BR2032.