Digital Clamp Meter Multimeter - True-RMS 6000 Count

Our review of the Digital Clamp Meter Multimeter finds it strongest as a practical, all-in-one tester for electricians and serious DIYers who need reliable handheld diagnostics. The biggest reason to buy is the combination of a TRUE-RMS 6000 count core with a D-shaped jaw and NCV detection, which together make measuring live circuits, variable frequency drives, and temperature quick and safe. It is a work-ready instrument with a clear LCD backlight and thoughtful accessories included in the package.

Key Features

• True-RMS 6000 count: Delivers accurate AC and DC voltage and current readings for cleaner results on non-sinusoidal waveforms and VFD-controlled circuits.
• D-shaped jaw: The 1.18 in jaw opens wide enough to clamp around most single conductors and provides a secure grip for consistent current measurement.
• VFD mode: Variable Frequency Drive filtering reduces noise and improves measurement accuracy when testing motors and drives.
• Non-contact voltage testing: NCV lets the user quickly detect live AC presence without touching conductors, with visual and audible alerts for safety.
• Multi-function meter: Built-in temperature (thermocouple included), capacitance, resistance, frequency, continuity and diode checks make it a versatile troubleshooting tool.
• User-centric design: Dual-color molded housing with a soft rubber grip, backlit LCD and an integrated flashlight improve comfort and usability in dim workspaces.

Who It's For

This clamp meter is aimed at electricians, HVAC technicians, solar installers and informed DIYers who need a single portable tool to measure AC/DC voltage, AC current, temperature and continuity while working on household, automotive or light industrial systems. The True-RMS capability and VFD mode make it particularly useful for servicing motors and variable frequency drive equipment.

Those who only need occasional basic voltage checks or prefer a tiny pocket tester without advanced features might find this unit heavier or more feature-rich than necessary. For lab-grade precision or specialized high-current metering beyond the specified jaw capacity, consider a purpose-built instrument suited to those needs.

Pros & Cons

Pros

• Wide feature set in one handheld unit, including temperature with included thermocouple and NCV detection.
• Accurate True-RMS readings and a VFD filter help with reliable measurements on distorted waveforms.
• Ergonomic, dual-color housing with backlight, flashlight and included hard case makes it job-site friendly.

Cons

• The 1.18 in jaw limits clamping to single conductors or small cable bundles and is not suited for very large conductors.
• No dedicated high-current range beyond the stated clamp capacity, so heavy industrial mains currents may require a different meter.

Specifications

Model	CM87B clamp multimeter
Counts	6000 TRUE-RMS
Jaw opening	1.18 in D-shaped jaw
Measurements	AC/DC voltage, AC current, resistance, capacitance, frequency, temperature, continuity, diode, NCV
Special modes	VFD filtering, NCV, Max/Min, Data Hold, Auto Range
Power	Two 1.5V AAA batteries (included)
Protection	Full range overload protection to 600V

Our Verdict

The Digital Clamp Meter Multimeter is a well-rounded, job-site ready instrument that offers strong value for electricians and technicians who need a single tool for current, voltage, temperature and diagnostics. Its True-RMS core, VFD filtering and NCV make it particularly useful when working with motors and solar or HVAC systems, while the ergonomic design and included accessories keep it practical for everyday field use.

Frequently Asked Questions

Does this clamp meter include a temperature probe?
Yes, a thermocouple for temperature measurement is included in the package.

How wide can the clamp open?
The D-shaped jaw opens to approximately 1.18 in, suitable for most single conductors and small cable bundles.

Is non-contact voltage detection available?
Yes, the meter has NCV with visual and audible alerts to detect AC presence without touching wires.