Fluke 115 Review 2025 [Compact True-RMS Digital Multimeter]

Last Updated on September 14, 2025

In this Fluke 115 Review, we begin by exploring what makes this compact True RMS digital multimeter so popular among technicians, electricians, and DIY enthusiasts. The Fluke 115 belongs to Fluke’s “everyday use” category, designed to deliver professional-grade accuracy and reliability in a small, user-friendly package.

What Is the Fluke 115?

The Fluke 115 is a portable handheld multimeter engineered for general-purpose electrical and electronic testing. Unlike cheaper meters that often provide inconsistent or inaccurate readings, the Fluke 115 incorporates True RMS technology, ensuring it measures both sinusoidal and non-sinusoidal waveforms accurately. This makes it ideal for modern electrical systems, which frequently involve non-linear loads like variable frequency drives, inverters, and computer power supplies.

Related: Similar Pricing – Fluke 117 [Electricians True RMS Multimeter]

It’s a versatile tool that can handle essential measurements—voltage, current, resistance, capacitance, continuity, frequency, and diode checks—making it a dependable everyday companion for technicians across industries.

Key Features That Make It Stand Out

True RMS Measurement – Unlike average-responding meters, it provides precise results for modern electrical signals.
Compact, Ergonomic Build – Easy one-hand operation with a durable, rubber-protected body.
Auto & Manual Ranging – Offers both convenience and control.
Min/Max/Average Recording – Captures fluctuations for better diagnostics.
Backlit Display – Ensures readability in poorly lit environments such as basements or engine bays.

Technical Specifications of the Fluke 115 Compact True-RMS Digital Multimeter:

Features	Fluke 115 Multimeter
Display:	Digital: 6,000 counts, updates 4 per second
Storage Temperature :	-40°C to + 60°C
Operating Temperature:	-10°C to + 50°C
DC millivolts:	Range/resolution 600.0 mV / 0.1 mV Accuracy ± ([% of reading] + [counts]): 0.5% + 2
DC volts:	Range/resolution 6.000 V / 0.001 V 60.00 V / 0.01 V 600.00 V / 0.1 V Accuracy ± ([% of reading] + [counts]): 0.5% + 2
Ohms:	Range/resolution 600.0 Ω / 0.1 Ω 6.000 kΩ / 0.001 kΩ 60.00 kΩ / 0.01 kΩ 600.0 kΩ / 0.1 kΩ 6.000 MΩ / 0.001 MΩ Accuracy 0.9% + 1 Range/resolution 40.00 MΩ / 0.01 MΩ Accuracy 5% + 2
Capacitance:	Range/resolution 1000 nF / 1 nF 10.00 μF / 0.01 μF 100.0 μF / 0.1 μF 9999 μF / 1 μF 100 μF to 1000 μF Accuracy 1.9% + 2 Range/resolution > 1000 μF Accuracy 5% + 20%
Lo-Z capacitance:	Range 1 nF to 500 μF Accuracy 10% + 2 typical
Continuity:	Range/resolution 600 Ω / 1 Ω Accuracy Beeper on < 20 Ω, off > 250 Ω detects opens or shorts of 500 μs or longer.
Diode test:	Range/resolution 2.00 V / 0.001 V Accuracy 0.9% + 2
DC amps:	Range/resolution 6.000 A / 0.001 A 10.00 A / 0.01 A Accuracy 1.0% + 3 20 A overload for 30-seconds max
AC amps True RMS (45 Hz to 500Hz):	Range/resolution 6.000 A / 0.001 A 10.00 A / 0.01 A Accuracy 1.5% + 3 20 A overload for 30-seconds max
Hz (V or A input)²:	Range/resolution 99.99 Hz / 0.01 Hz 999.9 Hz / 0.01 Hz 9.999 kHz / 0.001 kHz 50.00 kHz / 0.01 kHz Accuracy 0.1% + 2
Battery type:	9 volt Alkaline, NEDA 1604A/ IEC 6LR61
Battery life:	400 hours typical, without backlight
Warranty:	3 years
Price:	Check Today’s Price

Why Choose the Fluke 115?

The Fluke 115 strikes a balance between affordability, accuracy, and portability. While more advanced models (like the Fluke 87V) target engineers requiring extensive features, the Fluke 115 is perfect for:

Field service technicians
Residential/commercial electricians
HVAC specialists
Automotive enthusiasts
DIY hobbyists who want a high-quality multimeter

In short, it’s a compact, reliable tool that doesn’t compromise on safety or performance, making it one of Fluke’s most well-rounded offerings.

True RMS Multimeter Fluke 115 Review in 2025

Performance and Accuracy

When writing a detailed Fluke 115 Review, it’s impossible to ignore what truly matters in a multimeter—performance and accuracy. After all, a tool like this is judged not only by its build quality and design but also by how reliably it delivers correct readings in real-world scenarios. The Fluke 115 has been praised for years by electricians, engineers, and hobbyists alike because of its True RMS technology, consistent precision, and trustworthy results.

True RMS Technology – Why It Matters

One of the standout features of the Fluke 115 is its True RMS measurement capability. Many lower-cost meters provide “average-responding” measurements, which can be misleading when dealing with complex signals. In today’s world, most electrical systems do not produce perfect sine waves. Instead, you often deal with:

Distorted waveforms caused by switching power supplies.
Variable frequency drives (VFDs) that create non-linear loads.
Electronic ballasts and LED drivers that distort current and voltage signals.

An average-responding meter may read these signals incorrectly—sometimes by a margin of 30% or more. By contrast, the Fluke 115’s True RMS engine calculates the real heating value of the waveform, giving you results you can trust in industrial and residential applications alike.

Voltage Accuracy

The Fluke 115 is designed to measure AC/DC voltage up to 600 V with remarkable precision. According to Fluke’s specifications:

DC Voltage Accuracy: ± (0.5% + 2 digits)
AC Voltage Accuracy (True RMS): ± (1.0% + 3 digits)

For example, if you’re measuring 230 V AC in a residential circuit, the meter can provide readings within approximately ±2.3 V plus digit error. This level of accuracy is more than enough for troubleshooting outlets, breakers, and electrical panels.

Real-world example: An HVAC technician checking supply voltage to an air conditioning unit can instantly see if the line is under voltage (e.g., 208 V instead of 230 V), which could damage motors or compressors.

Current Measurement

The Fluke 115 can handle AC/DC current up to 10 A continuous, with an overload capacity of 20 A for up to 30 seconds. Its accuracy is:

DC Current: ± (1.0% + 3 digits)
AC Current (True RMS): ± (1.5% + 3 digits)

This makes it suitable for testing small motors, checking load currents on circuits, or measuring alternator output in vehicles.

Example: An automotive user can check whether an alternator delivers the expected charging current without needing a separate clamp meter (though using an external clamp accessory is often more convenient).

Resistance, Continuity, and Diodes

Resistance measurement is another critical area for technicians, and the Fluke 115 covers up to 40 MΩ with ± (0.9% + 1 digit) accuracy. This range is excellent for checking resistors in electronic circuits, troubleshooting wiring, or identifying faulty connections.

Continuity Testing: The Fluke 115 features a fast-response audible beeper that sounds immediately when resistance is below ~30 Ω. This is invaluable when tracing wires or confirming that fuses and switches are working.
Diode Test: Provides forward voltage drop measurement for semiconductor testing—handy for electronics repair and hobby projects.

Frequency and Capacitance Measurements

While not a laboratory-grade LCR meter, the Fluke 115 still offers respectable capacitance and frequency testing functions.

Frequency Range: 5 Hz to 50 kHz (± 0.1% + 2 digits)
Capacitance Range: 1 nF to 100 µF (± 1.9% + 2 digits)

Example in practice:

A field technician can verify that a motor drive is outputting the expected PWM frequency.
A hobbyist can check if a capacitor in a power supply has failed by comparing actual capacitance to its rated value.

Display Performance and Speed

Performance isn’t only about accuracy—it’s also about response time and usability. The Fluke 115 offers:

6000-count backlit LCD display – Easy to read even in dark environments.
Fast update rate (3 readings per second) – Ensures smooth, real-time feedback.
Bar graph display – Simulates an analog needle, which is helpful when monitoring trends or fluctuating signals.

The speed of its continuity beeper is also worth noting—it reacts almost instantly, which is something professionals appreciate when working on live circuits.

Related: Similar Display – Fluke 87V [Digital Multimeter]

Safety and Reliability Under Stress

Accuracy also depends on safety and circuit protection. The Fluke 115 is CAT III 600 V rated, meaning it’s designed to withstand transient surges in commercial building environments. Its robust input protection, fused current jack, and overload safeguards protect both the user and the meter itself.

Design, Build Quality, and Usability

When considering a professional tool, looks aren’t everything—but in this Fluke 115 Review, design and usability play a huge role in why so many technicians prefer this compact multimeter over cheaper alternatives. Fluke has mastered the art of combining rugged durability, ergonomic design, and practical features that make the 115 not only reliable but also enjoyable to use on the job.

Check Today’s Price

Compact and Ergonomic Design

The Fluke 115 was built with portability and ease of use in mind. Measuring just 6.3 x 3.2 x 1.9 inches and weighing around 400 grams (0.9 lbs), it is light enough to carry all day but sturdy enough to withstand rough handling.

One-Hand Operation: The size and button placement are optimized so you can easily operate the meter with one hand, leaving the other free for holding test leads.
Rubber Over-Molding: The protective yellow holster not only adds impact resistance but also improves grip, reducing the risk of accidental drops in the field.
Angled Display: Slightly tilted for better readability, especially when placed flat on a workbench.

This ergonomic design is particularly important for electricians working in tight spaces, like electrical panels, where holding a bulky meter can become a nuisance.

Rugged Build Quality

Fluke is well-known for producing industrial-grade tools, and the 115 is no exception. Unlike cheap plastic meters, the Fluke 115 is designed to withstand years of daily use.

Drop-Resistant Housing: The outer casing is tough enough to survive accidental falls from workbenches.
Input Jack Protection: Reinforced jacks prevent premature wear and reduce the chance of incorrect connections.
Safety Certification: CAT III 600 V rating ensures the meter can handle transient spikes and surges common in real-world environments.

Many users report using their Fluke meters for a decade or more with only minimal wear—proof of the company’s commitment to long-term durability.

Related: If you need a more compact and lightweight multimeter, check this Fluke 323[True RMS Clamp Meter]

Display Quality

The Fluke 115’s 6000-count backlit LCD is one of its strongest usability features. Unlike budget models with dim screens or poor contrast, this display ensures visibility in all lighting conditions.

Large Digits: Easy to read at a glance, even in dimly lit basements or engine bays.
White Backlight: Provides clear visibility in dark areas without straining your eyes.
Bar Graph Function: An analog-style bar graph at the bottom of the screen helps visualize rapidly changing signals in real time.

Example: When testing voltage drop across a car battery while cranking, the bar graph shows fluctuations much faster than the numerical display.

User-Friendly Controls

The Fluke 115 is designed for fast, intuitive operation.

Rotary Selector Dial: Smooth and clicky, making it easy to choose the correct function without slipping into the wrong setting.

Dedicated Buttons:

Hold Button: Freezes the current reading on-screen for later inspection.
Min/Max/Avg: Records signal fluctuations over time, useful for troubleshooting intermittent faults.
Range Button: Switch between auto-ranging and manual ranging for better control.

These controls are thoughtfully laid out, reducing the learning curve even for beginners.

Portability and Hands-Free Operation

For technicians working in the field, portability is key:

Lightweight and Compact: Fits easily into a tool bag or even a jacket pocket.
Optional Magnetic Hanger: Allows hands-free use when mounted to metal surfaces, such as electrical cabinets.
Tilt Stand: The built-in kickstand props the meter up at an angle for convenient bench use.

These small design details might seem minor, but they can make a huge difference during long service calls or complex troubleshooting tasks.

Usability in Real-World Environments

Practicality sets the Fluke 115 apart from budget meters:

Quick Continuity Beep: Instant response makes it easy to trace wires or test switches.
Durable Test Leads: Fluke TL75 or TL71 leads that come with the meter are flexible and reliable, unlike the stiff, low-quality leads bundled with cheaper models.
One-Hand-Friendly Shape: Useful for electricians working on ladders, automotive technicians under the hood, or HVAC specialists reaching into cramped spaces.

Use Cases & Applications

In this section of our Fluke 115 Review, we’ll look at the practical side—where and how this compact True RMS multimeter is used in real-world scenarios. The Fluke 115 is not an advanced laboratory meter, but it’s a powerhouse for general-purpose applications across electrical, HVAC, automotive, and DIY fields. Its versatility and reliability make it one of the best choices for technicians who want a single tool for multiple situations.

For Electricians and Field Technicians

Electricians are among the biggest users of the Fluke 115. Its safety rating, durability, and accuracy make it perfectly suited for daily service work.

Circuit Troubleshooting: Check supply voltage, test outlets, breakers, and wiring continuity.
Panel Maintenance: Safely measure voltage and current in distribution boards.
Lighting Systems: Diagnose faulty ballasts, LED drivers, and dimmer-controlled circuits.
Motor Testing: Ensure proper voltage supply to pumps, fans, and compressors.

Example: A commercial electrician can quickly verify whether a branch circuit has the correct voltage (120 V or 240 V) or if there’s a wiring fault, without worrying about inaccurate readings.

For HVAC Technicians

HVAC professionals face unique challenges—motors, compressors, and control circuits that often use distorted waveforms. The True RMS accuracy of the Fluke 115 is a huge advantage here.

Check Supply Voltage to HVAC Units: Confirm correct power to compressors and fans.
Current Measurement: Test load current of motors to detect overloading before failure.
Capacitor Testing: Verify run capacitors in air conditioners and heat pumps.
Continuity Checks: Ensure control wiring, relays, and contactors are working properly.

Example: An HVAC tech diagnosing a unit that frequently trips can use the Min/Max function to capture momentary current spikes during compressor startup.

For Automotive Technicians and DIY Car Enthusiasts

While the Fluke 115 is not an automotive-specific meter, it’s still highly effective for vehicle diagnostics.

Battery and Charging System Testing: Check battery voltage under load, alternator output, and charging current.
Sensor Testing: Measure resistance or voltage of oxygen sensors, temperature sensors, and MAP sensors.
Continuity and Switch Testing: Quickly confirm if relays, switches, or fuses are working.
PWM and Frequency Signals: Measure injector signals or ignition control module outputs.

Example: A DIY car enthusiast can use the Fluke 115 to confirm whether an alternator is providing the correct charging voltage (typically around 13.8–14.4 V).

For Electronics and Hobby Projects

The Fluke 115 is not limited to heavy-duty industrial use; it’s also excellent for hobbyists and electronics tinkerers.

Capacitance Measurements: Identify bad filter capacitors in power supplies.
Frequency Testing: Verify oscillator outputs or PWM signals in small circuits.
Diode and Continuity Testing: Perfect for checking LEDs, diodes, and circuit traces.
Component Troubleshooting: Quickly test resistors, fuses, and connectors.

Example: A maker building an Arduino-based project can use the Fluke 115 to measure PWM output frequency and ensure signals are within expected ranges.

For Homeowners and DIY Repairs

Even if you’re not a professional technician, the Fluke 115 is handy for everyday household tasks.

Check Outlet Voltage: Ensure home outlets are properly wired and delivering stable voltage.
Appliance Testing: Verify continuity in fuses and heating elements.
Lighting Troubleshooting: Test dimmers, switches, and LED drivers.
Backup Power Systems: Measure inverter and UPS output voltage.

Example: A homeowner installing a generator transfer switch can confirm proper voltage before connecting appliances, ensuring safety and reliability.

Who Should Avoid the Fluke 115?

While the Fluke 115 is versatile, it’s not perfect for everyone.

Those who need temperature measurement (you’d want the Fluke 116 or higher).
Those working in industrial high-voltage environments beyond CAT III 600 V (the Fluke 87V would be better).
Users who require large capacitance measurement (>100 µF) for industrial capacitors.

For most technicians and DIY users, however, the Fluke 115 is more than enough.

Comparison Table Fluke 115 and Fluke 116

Feature	Fluke 115	Fluke 116
Application	General electrical measurements	HVAC applications
Voltage Measurement	Up to 600V AC/DC	Up to 600V AC/DC
Current Measurement	Up to 10A AC/DC (20A for 30 seconds)	Up to 600 µA AC/DC
Resistance	Up to 40 MΩ	Up to 40 MΩ
Capacitance	Up to 10,000 µF	Up to 10,000 µF
Frequency	Up to 50 kHz	Up to 50 kHz
Temperature	No	Yes, -40°C to +400°C (-40°F to +752°F)
Microamps Measurement	No	Yes, for HVAC flame sensors
LoZ (Low Impedance)	No	Yes, helps prevent false readings due to ghost voltage
Display	6000 counts, backlit	6000 counts, backlit
Safety Rating	CAT III 600V	CAT III 600V
Warranty	3 years	3 years
Price	Check Price	Check Price

Pros and Cons of the Fluke 115

Pros ✅

True RMS accuracy for reliable readings on all waveforms.
Compact, lightweight, and ergonomically designed.
Bright, backlit 6000-count display with bar graph.
Wide measurement range for voltage, current, resistance, frequency, and capacitance.
Excellent safety rating (CAT III 600 V) with overload protection.
Rugged build quality with protective rubber holster.
Long battery life (~400 hours).
Trusted brand with high resale value.

Cons ❌

No temperature measurement (HVAC users should consider the Fluke 116).
No non-contact voltage detection (available in Fluke 117).
Capacitance measurement limited to 100 µF (not ideal for large industrial capacitors).
Slightly higher price compared to generic alternatives.

Updated Information & Availability

The Fluke 115 has been on the market for years, and its continued popularity is proof of its reliability. Unlike some tech gadgets that become outdated quickly, professional test tools like the 115 remain relevant for decades because the fundamentals of voltage, current, and resistance don’t change.

Availability: The Fluke 115 is widely available online and through official distributors, often bundled with accessories such as test leads (TL71 or TL75), protective cases, and sometimes magnetic hangers for hands-free use.
Accessories: Users can add optional alligator clips, flexible current clamps, or tool holsters to expand functionality.
Price Trends: While it’s more expensive than budget models, the cost remains consistent because Fluke products hold their value over time. Many users even resell them after years of use for a good portion of the original price.

Best Practices for Using the Fluke 115

To get the most out of your meter and ensure it lasts for years, keep these tips in mind:

Start at the Highest Range: When unsure of the measurement, always begin at the maximum range to avoid overloads.
Use the Hold Function: Great for freezing a measurement when working in tight or awkward positions.
Regular Calibration: For professional use, annual calibration ensures accuracy, especially in regulated industries.
Check Test Leads: Inspect leads regularly for cracks or exposed wires to maintain safety.
Battery Care: Replace the two AA batteries promptly when low-battery warnings appear; weak batteries may affect accuracy.

Safety Tips to Remember

Because the Fluke 115 is often used in environments with live electricity, safety should always come first:

Only use the meter within its CAT III 600 V safety rating. For higher-voltage industrial systems, a Fluke 87V or CAT IV-rated meter is recommended.
Always verify your meter on a known live circuit before trusting it on critical measurements (a process known as the “three-point test”).
Avoid exposing the meter to extreme moisture or temperatures.

Maximizing Value from the Fluke 115

Here’s how to make the most of this compact yet powerful multimeter:

Combine with Accessories: Use optional magnetic hangers for hands-free testing.
Automotive Add-Ons: Pair with a clamp meter adapter to measure higher currents in cars.
DIY Projects: Use the capacitance and frequency features for electronics tinkering, extending its usefulness beyond electrical troubleshooting.

Troubleshooting table for the Fluke 115 Digital Multimeter

Issue	Possible Cause	Solution
Multimeter does not turn on	Dead or weak battery	Replace the battery with a fresh one (9V battery).
Display is blank or flickering	Battery connection is loose	Open the battery compartment and ensure the battery is properly connected.
Inaccurate readings	Dirty or damaged test leads	Inspect and clean the test leads; replace if necessary.
Resistance or continuity function not working	Test leads not properly connected	Ensure test leads are securely inserted into the correct ports.
Auto-ranging is slow or not working	Internal circuit issue	Try switching to manual ranging mode; if the issue persists, reset the device.
Cannot measure AC or DC voltage	Wrong function selected or blown fuse	Verify that the correct function is selected; check and replace the fuse if needed.
Multimeter shuts off unexpectedly	Auto power-off feature activated	Press any button to wake the device or disable the auto power-off function if available.
Device beeps continuously	Overload condition or incorrect settings	Ensure the leads are connected correctly and the correct range is selected for the measurement.
Backlight not working	Low battery or internal issue	Replace the battery; if the issue persists, contact Fluke support.
Unit gets hot during use	Prolonged high-current measurement	Allow the device to cool down and avoid measuring high currents continuously for long periods.

Who Is the Fluke 115 Best Suited For?

Based on its features, performance, and cost, the Fluke 115 is ideal for:

Electricians handling residential and commercial wiring.
HVAC techs who don’t need temperature measurement but want accurate voltage/current readings.
Automotive users who want a reliable tool for battery, alternator, and sensor checks.
DIY homeowners and hobbyists who want a safe, professional-grade meter instead of unreliable budget models.

Those needing temperature measurement should opt for the Fluke 116, while those wanting non-contact voltage detection may prefer the Fluke 117.

Final Thoughts – Should You Buy the Fluke 115?

The Fluke 115 strikes a balance that’s rare in the test equipment market: it’s affordable, durable, accurate, and compact. It may lack a few advanced features, but for most professionals and DIYers, it covers everything you’ll realistically need.

Strengths: Reliable True RMS accuracy, rugged build, bright backlit display, excellent ergonomics, and long lifespan.
Limitations: No temperature measurement, no NCV sensor, and limited capacitance range.

Still, when you consider safety, precision, and brand reputation, the Fluke 115 remains one of the best investments for anyone serious about electrical or electronic work.

Conclusion

If you are looking for a quality and an affordable multimeter to perform a wide range of functions, then you can’t go wrong with Fluke 115 multimeter. Aside from the fact that Fluke 115 price is reasonable, it is a durable, compact, portable, and accurate unit that performs a wide range of functions and it is very easy to use. However, this gadget has shortcomings of its own such as it cannot measure milliamps and microamps, which limits it to electrical instead of electronic work. Generally, the Fluke 115 is a wonderful unit for beginners and DIY enthusiasts, though professional technicians can as well as utilize it to carry out basic functions. I hope that this Fluke 115 Review will really help you find the right multimeter for you.

FAQ

Question: Does this unit come with a calibration certificate?
Answer: In most cases, companies do not issue this type of certificate. Nevertheless, you can request a certificate from Fluke for an extra charge.

Question: Can I measure temperature utilizing this multimeter?
Answer: No, it is not possible. It doesn’t matter if you buy a separate probe or not, this digital multimeter will not measure temperature.

Question: Is this product made in the USA?
Answer: No, it is not. The Fluke 115 digital multimeter is designed and not made in the USA. All the same, Fluke has manufacturing plants around the world and all of them produce high-quality products.

Still, have a question after reading this Fluke 115 Review? Comment below.