•    Extech MM570A  MultiMaster® High-Accuracy Multimeter


True RMS Multimeter with 50,000/500,000 count LCD and Temperature function:

The MM570A is a high accuracy multimeter. Full range multimeter functions with 0.02% basic DCV accuracy and up to 100kHz True RMS ACV bandwidth. Special True RMS combination AC+DC function for measurements of rectified AC (non-symmetrical) voltage and current waveforms. 4 to 20mA, displayed as 0-100% for process current measurements. Dual Type K Temperature inputs, Capacitance, Frequency, Resistance, Continuity, Duty cycle and Diode tests with. Max/Min recording with auto ranging, Auto Power off, Relative & Hold, as well as Peak function which captures transient pulses. Optional Windows compatible PC communication software and optically isolated cable. Complete with test leads, temperature probe, protective holster with stand and 9V battery.


  • Full range multimeter functions with 0.02% basic DCV accuracy and up to 100kHz True RMS ACV bandwidth
  • 50,000 count (500,000 for DCV and Hz) backlit LCD display with bargraph
  • Special True RMS combination AC+DC function for measurements of rectified AC (non-symmetrical) voltage and current waveforms
  • Filtered frequency function with adjustable trigger levels for variable speed motor drives and high voltage applications
  • AC/DC current to 10A with 0.01µA resolution
  • 4 to 20mA, displayed as 0-100% for process current measurements
  • Capacitance, Frequency, Resistance, Continuity, Duty cycle and Diode tests with 1000V input protection on all functions
  • Dual input Temperature function -58 to 1832°F (-50 to 1000°C ) with T1, T2 and T1-T2 display in °F or °C
  • High resolution to 1µV, 0.0001Hz, 0.01Ohm, 0.01µA and 0.1°
  • Max/Min recording with autoranging, Auto Power off, Relative & Hold, Peak function captures transient pulses
  • Optional Windows® compatible PC communication software and optically isolated cable
  • Complete with test leads, Type K thermocouple probe, protective holster with stand and 9V battery



Specifications                                     Range
DC Voltage                             500mV, 5V, 50V, 500V, 1000V
AC Voltage                             500mV, 5V, 50V, 500V, 1000V
DC Current                             500μA, 5000μA, 50mA,
                                                 500mA, 5A, 10A
AC Current                             500μA, 5000μA, 50mA,
                                                 500mA, 5A, 10A
Resistance (Ω)                        500, 5k, 50k, 500k, 5M, 50M
Capacitance                            50nF to 9999μF
Line Frequency                       5Hz to 200kHz
Logic Frequency                     5Hz to 2MHz
Temperature (MM570A)    -58 to 1832°F (-50 to 1000°C )
Duty Cycle                            0.1% to 99.99%
Dimensions/ Wt                  7.32 x 3.42 x 1.39" (186 x 87x 35.5mm)

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Extech MM570A MultiMaster® High-Accuracy Multimeter


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