Dual Input Thermocouple J/K Thermometer, Thermocouple, Number of Channels 2, Includes NIST-Traceable Certificate No, Accuracy +/-0.05 Percent +3.6 Degrees F/2 Degrees C at below -148 Degrees F, +/-0.15 Percent +1.8 Degrees F/1 Degrees C at above -148 Degrees F, (3) AAA, Backlit Dual 4-Digit LCD plus Elapsed Time, Functions Data Hold Function, Min/Max/Average Memory, Resolution 0.1¿F/0.1¿C