Thomas Traceable Hi-Accuracy Refrigerator Thermometer, with 2 Bottle Probe, -58 to 158 degree F High-accuracy refrigerator thermometer has -58 to +158 degrees F/-50 to +70 degrees C temperature range with +/- 0.3 degrees C accuracy for use in refrigerators, water baths, heat blocks, and incubators Choice of temperature-buffered bottle sensor or waterproof probe sensor, and 10-foot long micro cable allows doors to be closed on it Three-line LCD simultaneously displays minimum, maximum, and current temperature, and alarm provides visual and audible alarms for out-of-range temperatures Meets CDC requirements for thermometers and vaccine thermometers, and includes NIST Traceable Certificate provided by an A2LA-accredited ISO 17025 calibration laboratory to ensure accuracy and traceability