Fisherbrand™ Traceable® Refrigerator / Freezer Thermometer Fahrenheit -58° to +158°F (-50° to +70°C) Bottle Probe Desk / Wall Mount Battery Operated (738621_EA) 1/EAHigh accuracy dual thermometer permits user one button self calibration which reads to 0. 01 while simultaneously monitoring temperatures in refrigerator and freezer Triple display simultaneously shows minimum or maximum and current temperatures where minimum maximum monitors readings overnight, on weekends, or for any time period and displays the exact time and date Two AA batteries for continuous, one year always on monitoring Temperature buffered