CDN FG80 Refrigerator/Freezer Thermometer
The USDA keep-or-toss line is 40°F. A cheap thermometer in the fridge and freezer beats guessing after an outage. This item page is the stable address printed as a QR code in 90 Days Without Power by Robert Smythe. Check current price and stock on the seller page; listings change.
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Stable address for the printed book: https://90daysnopower.com/gear/cdn-fridge-thermometer
How this item fits a household plan
Use official kit guidance first. Ready.gov still starts with water, food, light, a radio, and a first-aid kit. A long-outage plan then adds water treatment, battery carbon monoxide alarms, sanitation, and a way to stay informed if home Wi-Fi is dead. This catalog is a companion to the book, not a requirement to buy 50 things this month.
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See also: why these Top 10 items come first · how to prepare for a 90-day blackout