Niagara Refrigerator/Freezer Temperature Card

If your refrigerator/freezer isn't cold enough food will spoil more quickly; if it is too cold, food won't last any longer. Either way, you're wasting money, electricity and food. With this credit card-sized temperature card, you can quickly and easily tell if the setting is too warm, too cold or just right - potentially saving food, electricity and money. Card has an adhesive back for permanent attaching to the inside wall if desired.