McKesson Ultra-Low Temperature Data Logger with Alarm-Ultra-Low Temperature Data Logger with Alarm McKesson Fahrenheit / Celsius -112 to +158F (-80 to +70C) 2 Stainless Steel Probes Flip-out Stand Battery OperatedMcKesson's Ultra Low Dual Probe data logging thermometer boasts of high accuracy Thermometer measures external temperatures ranging from 112 to 158 F ( 80 to 70 C) and internal temperatures ranging from 32 to 122 F (0 to 50 C) About 24 million readings logging Dual probe, monitor refrigerator and freezer simultaneously Ultra Low thermometer can measure down to 80 C Minimum and maximum reading maintained in memory User configurable low high alarm