Traceable™ Dual Thermometer with Min/Max and Time/DateTraceable Dual Thermometer with Min Max and Time Date Description Displays the temperatures of two separate probes in Celsius and Fahrenheit, and date time when minimum maximum temperatures occur. Fisher Scientific Traceable Dual Thermometer allows putting one probe in the freezer and another in the refrigerator (or measure two areas of a refrigerator). Audible and visual alarm feature provides alert when temperature exceeds two set points Alarm