The temperature can be adjusted from level 1 to level 5. Level 3 is recommended.
You can lower the temperature by turning the controller to the right and raise the temperature by turning the controller to the left.
Setting the controller at level 4-5 will maintain a low temperature in the freezer. When the quick freezing is finished (level 5), set the controller back to the recommended level.

For optimal food preservation, change the default temperature one level at a time, waiting 24 hours between changes to allow the temperature to stabilize.
Wait until 2 or 3 hours have passed after plugging in the appliance before storing food in the appliance.
The internal temperatures could be affected by the location of the appliance, the ambient temperature, the frequency of door opening and other factors.