6441 Data Logging Thermometer, (2) Glycol Filled 15 mL Glass Bottle Probes, Multi-Point Calibration, -58 Degrees to 158 Degrees F/-50 Degrees to 70 Degrees C, Application Freezers, Heating Blocks, Incubators, Refrigerators, Water Baths, Alarm Type Max/Min, Resolution 0.01 Degrees F/0.01 Degrees C, Probe Type (2) Bottle, (2) AAA Batteries, Temperature Accuracy +/-0.25 Degrees C, Data-Logging Critical Environment Digital Thermometer