This self-powered adapter turns your multimeter into a thermometer. Measurement range is -58°F through 1832°F (-50°C through 1000°C). Input impedance of the meter must be at least 12k, and the range must cover 0 to 1VDC (analog or digital). The TP-30B uses K-type thermocouple. The TP-29 general purpose temperature probe is included. °F / °C selectable Measures temperature of any surface, liquid or gas 1mV per degree Open probe warning