The appropriate temperature level on a refrigerator with a 1-7 temperature power scale can vary depending on the specific model and manufacturer. Generally, the higher the number on the scale, the colder the refrigerator will be. In most cases, the higher numbers represent colder temperatures, with level 7 being the coldest setting.
To find out the exact temperature corresponding to level 7 on your refrigerator, it's best to consult the refrigerator's user manual. The manual should provide specific information about the temperature settings and what temperature range each level corresponds to in Celsius or Fahrenheit.
If you don't have access to the user manual, you can also try searching for the model number of your refrigerator online to find the manufacturer's specifications and recommendations for temperature settings.
Keep in mind that the ideal refrigerator temperature for food safety and preservation is generally around 4°C (40°F). However, some individuals might prefer slightly colder temperatures for specific needs or preferences. It's essential to strike a balance between keeping food safe and maintaining optimal freshness and quality for your perishable items.