Excellante Dial Refrigerator/Freezer Thermo, -20~80 Degrees Fahrenheit Made out of stainless steel to withstand the hot temperatures of the oven Dial refrigerator/freezer thermometer is excellent for measuring whether the refrigerator or freezer is at a certain temperature. Has a unique hook to either hang from your freezer/refrigerator compartments or it can stand on its base It is easy to clean, but is not intended for dishwasher use National Sanitation Federation (NSF) approved