The Comark UTL80 thermometer with colored temperature zones is designed for quick reading inside a refrigerator, freezer or cooler. The double stick tape allows for securing inside a refrigerator, freezer or cooler. Use to check your refrigerator or freezer is at the correct temperature, keeping food safe to eat. Accuracy: ±1 division. Division 2°. Easy-to-read color HACCP zones. NSF Approved 1 year warranty