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Triplett 2021 Full Product Line Catalog: Volume 1 Now Available!
Triplett 2021 Full Product Line Catalog: Volume 1 Now Available!

True RMS Digital Multimeter with LPF and LoZ- (MM525)


The Triplett MM525 is a 6000 count high performance digital multimeter with True RMS readings to provide better accuracy when measuring non-sinusoidal or noisy waveforms. It offers a large variety of measurement features including AC/DC Voltage, AC/DC Current, AC/DC µA Current, Resistance, Temperature, Frequency, Capacitance, Continuity, and Diode Test. Additional features include an EBTN (Enhanced Black Twisted Nematic) display with 31-segment analog bargraph, Lo Z (impedance) mode for identifying ghost voltages, Low Pass FIlter (LPF) for filtering frequency and harmonic interference when measuring variable frequency drives, data hold, relative mode, and a built-in NCV Detector. The rubberized overmolded housing provides impact and drop resistance in a sleek ergonomic design. ETL listed with CAT III 600V safety rating that provides superior resistance to damage from transient overvoltages in demanding settings. The Model MM525 is suited for a variety of industrial and residential applications such as security, home theater, electrical, HVAC installations and more. Includes test leads, temperature probe, pouch case, and (3) AAA batteries. 1-year warranty.


MM525-NIST Comes with Certificate of traceability to NIST Standards 
Please add 3-5 days lead-time for the NIST calibration process


  • True RMS provides better accuracy when measuring non-sinusoidal or noisy waveforms
  • 6000 count EBTN display w/bargraph
  • LoZ mode (Low Impedance)
  • µA Current measurement
  • Low Pass Filter (LPF)
  • Data Hold and Relative mode
  • Min/Max and Auto power off
  • Low battery indicator
  • CAT III 600V safety category
  • ETL listed
  MM520 MM525
Display counts 6000 count 6000 count EBTN w/bargraph
Basic Accuracy ±0.7% ±0.7%
AC/DC Voltage 600V 600V
AC/DC Current 10A 10A
AC/DC µA Current 600µA 600µA
Resistance 60MΩ 60MΩ
Temperature -40 to 1832°F
(-40 to 1000°C)
-40 to 1832°F
(-40 to 1000°C)
Capacitance 100mF 100mF
Frequency 10MHz 10MHz
Duty Cycle 0.1 to 99.9% 0.1 to 99.9%
Continuity <10Ω <50Ω
Lo Pass Filter (LPF) Yes Yes
LoZ Yes
NCV Detector Yes Yes
Clamp Adapter Input 10mV/A (60A max)
Safety Category CAT III-600V CAT III-600V
Dimensions 6.9 x 3.2 x 1.9"
(175 x 81 x 48.5mm)
6.9 x 3.2 x 1.9"
(175 x 81 x 48.5mm)
Weight 12.3oz. (350g) 12.2oz. (345g)