- AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging
- Fluke 323 Clamp Meter
- FNIRSI DMC-100 Digital Clamp Meter Multimeter 10000 Counts
- Klein Tools CL390 AC/DC Digital Clamp Meter
- Kaiweets Digital Clamp Meter HT206D
- MAYILON MY2600D Digital Clamp Meter
- ANENG Digital Multimeter Tester with Amp Ohm Volt Clamp Meter
- Fluke-301D/ESP, 600A AC/DC Clamp Meter
- Tesmen TCM-300A Digital Clamp Meter
- Buyer’s Guide
- Conclusion
- Frequently Asked Questions
- What is the main difference between a multimeter and a clamp meter?
- Can clamp meters measure DC current?
- Are clamp meters safe for non-contact voltage testing?
- Which clamp meter is best for tight spaces?
- What is True RMS, and why is it important?
- Are clamp meters suitable for temperature measurements?
- Do clamp meters support data storage?
So which one should you get – a multimeter or a clamp meter? While both are tools for measuring electrical values, they have different, albeit similar, purposes.
A multimeter is much more versatile, measuring AC/DC voltage, current, and resistance, which makes it the perfect tool for in-depth circuit troubleshooting.
On the other hand, a clamp meter allows you to measure current without disconnecting any wires. This functionality makes it perfect for on-the-go diagnostics and high-current applications.
In this blog, we’ll take a closer look at the major features and benefits of each tool. By the end, you’ll know which one is best suited to your needs.
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging

AstroAI Digital Clamp Meter takes the complexity out of electrical testing. It provides precise measurements for AC current, AC/DC voltage, resistance, frequency, duty cycle and more.
Its slim design makes it easy to access hard-to-reach areas. The 2.36 inch large jaw opening allows you to measure AC current without removing the circuit. Included in the device is NCV (non-contact voltage) testing.
It can alert you by sound and light to show weak signals or strong signals, enhancing your safety and convenience when using it. This device is made for everyday use.
It features an LCD backlit display, data hold capability, max/min readings and a flashlight for use in dimly lit conditions. Safety first design, overvoltage category III 600V, environmental pollution degree 2.
Applications include a low battery indicator and auto shut-off for improved battery life. This versatility and convenience as a whole makes the product the best multimeter for electricians and enthusiasts alike.
Product Specification Table
| Category | Specifications |
|---|---|
| Model Name | AstroAI Digital Clamp Meter |
| Measurement Capabilities | AC Current, AC/DC Voltage, Capacitance, Resistance, Diode Continuity, Live Wire Tests |
| Display Type | LCD Backlit Screen |
| Jaw Size | Large Opening |
| Data Storage | Data Hold, Max/Min |
| Power Source | Battery |
| Battery Type | Not Specified |
| Safety Standards | Overvoltage Category III 600V, Environmental Pollution Degree 2 |
| Auto Power Off | Yes |
| Non-Contact Voltage Detection | Yes (Audible and Visual Alerts) |
| Dimensions | 8.46 x 4.53 x 1.77 inches |
| Weight | 13.76 ounces |
| Manufacturer | AstroAI |
| User Features | Flashlight, Continuity Buzzer, Low Battery Indicator |
Fluke 323 Clamp Meter

With the rugged, reliable Fluke 323 Clamp Meter, you get trustworthy performance on the most common commercial and residential electrical jobs. This handy little device can measure AC current up to 400 amps and AC/DC voltage up to 600 volts. It’s ideal for commercial and residential troubleshooting.
With resistance measurement up to 4,000 ohms, and a built-in continuity sensor with audible indication, it takes the guesswork out of circuit troubleshooting. True RMS sensing ensures you get the correct reading, even with non-linear loads. Plus, with a 1.18-inch jaw opening, you can measure current while the circuit is still intact.
Its slim, ergonomic build fits snugly in your hand, giving you the flexibility to work in tighter spaces. Tough built for the most rugged jobs. Safety is prioritized as it is rated IEC 61010-1, CAT IV installations 300 volts, CAT III installations 600 volts.
A soft carrying case and 2-year warranty provide added value, making sure you’re well-equipped for the task at hand.
| Category | Specifications |
|---|---|
| Model Name | Fluke 323 Clamp Meter |
| Measurement Capabilities | AC current up to 400 A, AC/DC voltage up to 600 V, resistance up to 4,000 ohms |
| Display Type | LED |
| Jaw Size | 1.18 in |
| Data Storage | Not specified |
| Power Source | Battery |
| Battery Type | 2 AAA batteries |
| Safety Standards | IEC 61010-1, CAT IV 300V, CAT III 600V |
| Auto Power Off | Yes |
| Non-Contact Voltage Detection | No |
| Dimensions | 7.36 x 2.95 x 1.34 in |
| Weight | 0.47 lbs |
| Manufacturer | Fluke Corporation |
| User Features | Slim design, continuity sensor, rugged build |
FNIRSI DMC-100 Digital Clamp Meter Multimeter 10000 Counts

The FNIRSI DMC-100 is a great choice for anyone looking for a high-quality and feature-rich digital clamp meter. The 10,000 count display provides clear readings of values. Plus, it measures AC/DC current up to 600 amps so you can expertly handle the most demanding tasks.
It handles AC or DC voltage and current, resistance, capacitance, frequency, and yes, even temperature. The electric power measurement function is built-in, which makes it easy and convenient to measure voltage/current at the same time. With its 240×320 TFT color screen, you can easily see readings with additional features such as a data curve, max/min values, and average values.
The 25 mm jaw width is large enough to accommodate a wide range of wire sizes. Additionally, the low voltage NCV feature improves safety by detecting live wires. This digital clamp meter brings you super convenience with 30 historical data sets storage.
It comes with a flashlight for low-light environments and it’s quickly recharged with Type-C fast charging. Compact and lightweight, it is ideal for the professional or the DIY electrician.
| Category | Specifications |
|---|---|
| Model Name | FNIRSI DMC-100 |
| Measurement Capabilities | AC/DC voltage, current, resistance, capacitance, frequency, temperature, continuity, diode |
| Display Type | 240×320 TFT color screen |
| Jaw Size | 25 mm (0.98 inches) |
| Data Storage | 30 historical records, 8 real-time data sets |
| Power Source | Rechargeable |
| Battery Type | Built-in 1500 mAh lithium battery |
| Safety Standards | NCV (live wire detection) |
| Auto Power Off | Yes |
| Non-Contact Voltage Detection | Yes |
| Dimensions | 7.7 x 2.91 x 1.14 inches |
| Weight | 6.72 ounces |
| Manufacturer | FNIRSI |
| User Features | Low battery indicator, flashlight with brightness adjustment, Type-C fast charging |
Klein Tools CL390 AC/DC Digital Clamp Meter

Where the Klein Tools CL390 truly excels is with its multi-functional measurement capabilities. It measures AC and DC current directly through the clamp with professional accuracy, and measures AC/DC voltage, resistance, and more with test leads.
Add an optional thermocouple to check temperature, and you’ve got a versatile meter that’s perfect for a wide variety of electrical jobs. The clamp jaw features non-contact voltage testing for a safe, hands-free solution while testing.
The large reverse-contrast LCD display makes reading even in low light easy. With auto-ranging capability and TRMS technology, measurements are accurate and consistent on every measurement.
Convenient features such as Max/Min and Data Hold functions make data collection easy, and the auto power-off function conserves battery life. Convenient side-mounted test lead holder and optional magnetic hanger for hands-free use.
The package includes a convenient carrying case, CAT rated test leads, thermocouple and batteries. You’ll be fully equipped to get started, straight out of the box!
Overall this clamp meter is super useful and easy to use, definitely a great tool to have in any user’s arsenal.
| Category | Specifications |
|---|---|
| Model Name | Klein Tools CL390 |
| Measurement Capabilities | AC/DC current, voltage, resistance, continuity, frequency, duty cycle, DC microamps, diode test, capacitance, temperature |
| Display Type | Reverse-contrast LCD |
| Jaw Size | Integrated with NCVT |
| Data Storage | Max/Min, Rel/Zero, Data Hold |
| Power Source | Battery |
| Battery Type | 3 x AAA |
| Safety Standards | CAT III/CAT IV safety caps |
| Auto Power Off | Yes, after 10 minutes |
| Non-Contact Voltage Detection | Integrated into clamp jaw |
| Dimensions | Not specified |
| Weight | Not specified |
| Manufacturer | Klein Tools |
| User Features | Test lead holder, optional magnetic hanger, carrying case included |
Kaiweets Digital Clamp Meter HT206D

Next, the Kaiweets Digital Clamp Meter HT206D comes to the rescue as a dependable option for anyone who requires versatile measurement capabilities. This tool accurately measures True-RMS AC and DC current and voltage.
In addition, it measures frequency, resistance, capacitance and temperature with its K-Type thermocouple. Its NCV Detection Function allows you to detect voltage without touching, providing additional safety.
To reduce ghost voltage interference, a LowZ feature provides more accurate readings. The two-color backlit LCD display, along with the included LED flashlight, makes it easy to see in low light conditions.
Safety comes first here, complies with IEC 61010-1 and CAT III 600V. Double insulation and an auto power-off after 15 minutes of non-use increase usability.
Compact at only 7.5 inches long and 7.68 ounces, it’s easy to hold and use. The 36-month product service from Kaiweets offers additional reassurance.
| Category | Specifications |
|---|---|
| Model Name | HT206D |
| Measurement Capabilities | True-RMS AC/DC Current, AC/DC Voltage, Frequency, Resistance, Capacitance, Temperature |
| Display Type | Two-color Backlit LCD |
| Jaw Size | Not Specified |
| Data Storage | Not Available |
| Power Source | Battery |
| Battery Type | 2 AAA (not included) |
| Safety Standards | IEC 61010-1, CAT III 600V |
| Auto Power Off | Yes (after 15 minutes) |
| Non-Contact Voltage Detection | Yes |
| Dimensions | 7.5 x 2.8 x 1.3 inches |
| Weight | 7.68 ounces |
| Manufacturer | Kaiweets |
| User Features | LED Flashlight, Low Battery Indicator, K-Type Thermocouple |
MAYILON MY2600D Digital Clamp Meter

The MAYILON MY2600D Digital Clamp Meter is a reliable and powerful tool that provides a versatile and efficient solution for all your electrical testing needs. It can measure AC/DC Current, Voltage, Resistance, Temperature, Diode test etc. Great for Industrial and Household Use.
Instantly detect voltage using the non-contact voltage (NCV) detection feature. Audible and visual safety alerts help protect you from unsafe conditions as you work. Its large jaw opening makes it easier to measure current without contacting the circuit.
Additionally, overload protection, low battery indication, and automatic shutdown make it more reliable and user-friendly. Safety Certified to IEC61010 standards with double insulation (CAT III 600V), safe to operation.
Temperature range from -58°F to 2372°F, sufficient for a broad range of applications. A large, backlit LCD display and built-in LED flashlight improve visibility in dark work spaces.
Compact, powered by two AAA batteries—which are included—it’s convenient for portable, one-hand operation.
| Category | Specifications |
|---|---|
| Model Name | MY2600D |
| Measurement Capabilities | AC/DC Current, Voltage, Capacitance, Frequency, Duty Cycle, Resistance, Temperature, Diode, Continuity, Live Wire Tests |
| Display Type | LCD with Backlight |
| Jaw Size | Large for easy measurement |
| Data Storage | HOLD Function |
| Power Source | Battery |
| Battery Type | 2 AAA Batteries (Included) |
| Safety Standards | IEC61010, IEC61010-2-032, CAT III 600V |
| Auto Power Off | Yes |
| Non-Contact Voltage Detection | Yes, with audible/visual alarms |
| Dimensions | Compact and portable |
| Weight | Lightweight |
| Manufacturer | MAYILON |
| User Features | LED Flashlight, Low Battery Indicator, Overload Protection |
ANENG Digital Multimeter Tester with Amp Ohm Volt Clamp Meter

For anyone working with electrical systems, the ANENG Digital Multimeter Tester offers a versatile way to measure current, voltage (AC/DC), resistance, capacitance, frequency, diodes, and continuity. Its double open jaws allow you to test without disconnecting the circuit, which is more efficient and practical for a variety of tasks.
A large, backlit display makes reading measurements simple and reduces mistakes while using the meter. This tool’s slim, heavy-duty build makes it easy to transport from job to job. It’s even loaded with convenient accessories such as test leads, batteries, and a carrying bag.
Safety is a priority with this multimeter, featuring anti-burn double fuses, overload protection, and insulated probes designed with safety in mind. Whether you are a professional, such as an electrician or engineer, or a student or hobbyist, this multimeter is perfect for you.
Dependable and versatile, it’s a great choice for anyone looking for consistent readings in a variety of electrical contexts.
| Category | Specifications |
|---|---|
| Model Name | ANENG Digital Multimeter Tester |
| Measurement Capabilities | Current, AC/DC voltage, resistance, capacitance, frequency, continuity, diodes |
| Display Type | Clear digital screen |
| Jaw Size | Double open jaws |
| Data Storage | Not specified |
| Power Source | Battery |
| Battery Type | Included |
| Safety Standards | Anti-burn double fuses, overload protection, insulated probes |
| Auto Power Off | Not specified |
| Non-Contact Voltage Detection | Not specified |
| Dimensions | Compact (exact dimensions not provided) |
| Weight | Lightweight |
| Manufacturer | ANENG |
| User Features | Portable, user-friendly, accessories included |
Fluke-301D/ESP, 600A AC/DC Clamp Meter

The Fluke-301D/ESP, 600A AC/DC Clamp Meter is true AC/DC meter with precision and convenience in a slim, lightweight design. Its slim .39 in (10 mm) jaw slips easily into tight spaces. This rugged design further enhances its suitability for penetrating tough issues in tough environments.
This multifunctional tool allows users to do more with less. It’s rated to measure AC current up to 600 amps, plus voltage, resistance, continuity, and capacitance—all in one handy portable meter. Built for the long haul, it’s rated CAT III 300V safety rating, making it a trusted choice for reliable performance on low-to-medium voltage electrical systems.
This clamp meter is powered by two included AAA batteries and weighs just 6.88 ounces. Its small size of 7.48 x 2.04 x 0.63 inches makes it very convenient to transport.
Whether for AC or DC applications, its versatility makes it a great choice for professionals needing accurate measurements on the go. The one-year manufacturer warranty further adds to its long-term confidence.
Tesmen TCM-300A Digital Clamp Meter

Tesmen TCM-300A Digital Clamp Meter,6000-Count With dual measurement modes, it’s great for all types of tasks. It measures AC and DC current, AC and DC voltage, resistance, capacitance, temperature, frequency and duty cycle.
The exclusive clamp design allows you to test current easily without direct contact. The non-contact voltage testing adds safety with audible and visual alerts. The inrush current measurement function (5~600 A in AC mode) is excellent for diagnosing initial start problems on any appliance or motor.
This device is designed to withstand harsh environments and is CAT III 600V and RoHS safety rated. It has overload protection and auto power off to save battery life.
With industry leading flashlight and backlit display, it’s practical to use in dark work environments. The package comes with test leads, temperature probe pens, a carrying case and AAA batteries included, ready to use.
To ensure precise readings, always clamp around a single conductor and unplug test lead dust plugs prior to use.
| Category | Specifications |
|---|---|
| Model Name | Tesmen TCM-300A |
| Measurement Capabilities | AC/DC current, AC/DC voltage, NCV, Inrush, Live, resistance, capacitance, diode, continuity, frequency, temperature |
| Display Type | Backlit digital |
| Jaw Size | Not specified |
| Data Storage | Data hold |
| Power Source | Battery |
| Battery Type | AAA batteries |
| Safety Standards | CAT III 600V, RoHS certified |
| Auto Power Off | Yes |
| Non-Contact Voltage Detection | Yes, with alarms |
| Dimensions | Not specified |
| Weight | Not specified |
| Manufacturer | Tesmen |
| User Features | Flashlight, backlight, low battery indicator, non-contact voltage testing, inrush measurement |
Buyer’s Guide
Clamp meter selection will largely depend on your intended application and use case. Whether for general household use to check circuits in the home or testing and troubleshooting small appliances, the AstroAI Digital Clamp Meter is convenient. It has auto-ranging and gives 2000 counts on simple measurements.
If accuracy is your primary concern, the FNIRSI DMC-100 has 10,000 counts for more specific readings. Professionals buy the brands they trust, brands like Fluke that are known for their reliability. The Fluke 323 model is ideal for AC measurements, while the Fluke-301D smartly handles AC and DC currents up to 600A.
If you’re looking for even more versatility, take a look at the Klein Tools CL390. It has a built-in temperature measurement feature. The Kaiweets HT206D features non-contact voltage detection.
Budget-minded users will appreciate the ANENG or MAYILON models as more practical options while still providing a necessary array of quality features. Each has its own strengths, so look for accuracy vs durability vs the features you’ll use the most.
Conclusion
Multimeters are more versatile than clamp meters and are better suited for detailed electrical measurements. Clamp meters are better suited for higher currents and allow you to measure current without opening the circuit. While both tools have their respective strengths, the right tool in your hand allows your work to be more efficient and safer.
Each of the products we’ve listed has its own specialized features, so pay attention to what fits your work the best. Whether you require the highest precision, ruggedness, or user-friendly design, there is a solution for every need.
Consider the specific things you’ll need to do and choose the device best-suited to your planned work. By investing in the right meter, you’ll save time and frustration. Take your time—select the meter that will help you do the job correctly the first time.
Frequently Asked Questions
What is the main difference between a multimeter and a clamp meter?
Multimeters are more versatile tools that can measure voltage, resistance, and current with test leads. Clamp meters are better for measuring current without opening circuits. Clamp meters are best for high-current systems but multimeters provide more versatility.
Can clamp meters measure DC current?
The answer is yes, most new clamp meters do, including models like the Klein Tools CL390 or the FNIRSI DMC-100 which measure both AC and DC current. Some models, such as the AstroAI Digital Clamp Meter only measure AC current.
Are clamp meters safe for non-contact voltage testing?
Non-contact voltage detection Yes, all clamp meters like the Kaiweets HT206D and MAYILON MY2600D come with NCV detection. This unique Fluke feature lets you safely test for voltage without touching or removing wire insulation, with built-in audible and visual alarms for your convenience and safety.
Which clamp meter is best for tight spaces?
The Fluke-301D/ESP is perfect for tight spots with its skinny 10 mm jaw. Its compact and portable design make it perfect for tight spaces.
What is True RMS, and why is it important?
True RMS gives correct readings even for a wave that is non-linear or distorted. The Fluke 323 and Klein Tools CL390 are both True RMS meters. This function ensures accurate readings around the more complicated electrical systems.
Are clamp meters suitable for temperature measurements?
As seen in some top clamp meters such as Kaiweets HT206D and Klein Tools CL390, temperature measurement is supported with thermocouples. This provides added versatility for HVAC or industrial applications.
Do clamp meters support data storage?
Yes, high-end models such as the FNIRSI DMC-100 have real-time waveform preservation and storage for up to 30 waveforms. That’s particularly helpful for professionals who need to be able to analyze trends over time.