Thermometer, Refrigerator/Freezer Measures in degrees Celsius and Fahrenheit, Traceable to standards provided by NIST, Triple display (current, high and low temperatures). Includes velcro and magnetic mounting strip and "AA" battery. Unit shows one temperature at a time. You can cycle through the button to see current,high and low temps.

Certifications: Individually serial-numbered Traceable Certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA; indicates traceability to standards provided by NIST.