The Triplett MM870-NIST True-RMS Handheld Industrial-Grade Precision Digital Multimeter is designed for professionals seeking precision, reliability, and durability in challenging environments. Ideal for both professional and DIY applications, this tool accurately measures AC/DC voltage and current, microamp current, resistance, temperature, capacitance, frequency (electronic and electrical), and duty cycle.

Equipped with True-RMS for superior accuracy in non-sinusoidal or noisy waveforms, this unit boasts a backlit 6,000/60,000 count LCD display with a bargraph for clear readings. The MM870-NIST features a LPF (low pass filter) to mitigate frequency and harmonic interference which is particularly useful when measuring variable frequency drives. The peak hold (>1 ms) with min/max captures and displays peak values for thorough analysis. The unit also records min/max/average values and includes a data-hold function to freeze measurements along with an auto-hold feature that updates readings upon detecting a new stable reading. The relative mode is useful for comparison measurements against a stored reference value.

Robustly built, the MM870-NIST is waterproof with an IP67 rating, drop-proof up to 6.5 feet (2 meters), and adheres to a CAT IV 600V safety rating.

The MM870-NIST model includes a Certificate of Traceability to NIST to certify that measurement standards for the tool are met.