Additional Features: 6 1/2 digits DCV (200mV-100V Full Scale) Ohms (200 to 200M Full Scale) RTD Temperature Thermocouple Temperature Low Frequency AC (3 1/2 digits, 200mV to 700V True RMS @0.1 to 10 Hz) Other AC Functions, Current, Optional The 193A Digital Multimeter combines high speed, 6 functions, and superior performance into one of today's best values in instrumentation. The Keithley 193A DMM can measure DC Voltage, Resistance, dBV, Temperature (RTD), Temperature (Thermocouple) and Low Frequency AC.