The passport card can be used at U.S. land and sea ports of entry when arriving from Canada, Mexico, the Caribbean and Bermuda. The card may not be used to travel by air.
A refrigerator maintains a temperature a few degrees above the freezing point of water. Optimum temperature range for perishable food storage is 3 to 5 Â°C (37 to 41 Â°F).emperature settings for refrigerator and freezer compartments are often given arbitrary numbers by manufacturers (for example, 1 through 9, warmest to coldest), but generally 3 to 5 Â°C (37 to 41 Â°F) is ideal for the refrigerator compartment and â18 Â°C (0 Â°F) for the freezer.
The optimal temperature range for the refrigerator is 34 to 40 degrees Fahrenheit to keep food safe and unfrozen. If your thermometer reading is outside of this range after the temperature test, adjust the temperature settings.trekandshoot/iStock/Getty Images). Appliance Thermometer Information. You need a refrigerator/freezer thermometer to determine the current temperature range in both your fridge and freezer -- otherwise you won't know whether to adjust the temperatures to warmer or cooler settings.