Fluke 117 Electricians True RMS Multimeter
FLIR DM90 True RMS Industrial Multimeter
Etekcity Digital Multimeter, MSR-R500
The multimeter is used by both professional electricians and do-it-yourselfers to determine the voltage, current, and resistance of circuits and to diagnose problems with electrical components or systems. You can use a multimeter to test batteries, check the integrity of old extension cords, find bad switches and spot hot wires among other things. Perhaps the biggest challenge for novices when it comes to multimeters is making sense of the buttons and readouts, which is why you should familiarize yourself with some basic electrical concepts before using one. That said, below we’ve brought together 10 of the best multimeters available today.
The Best Multimeter
Integrated non-contact voltage detection, True RMS accuracy and a variety of safety enhancements lead the feature list of the Fluke 117. This is a professional-grade multimeter with auto-range capability, min/max readings and the ability to measure everything from current to voltage to capacitance and more at the push of a button. Ghost voltage readings are consigned to the past when you use this precision multimeter from Fluke. Our handy guide to the best laser measures features more great products like this.
10,000 μF capacitance
3 years warranty
600 Volts CTA rating
- ModelFLUKE 117
- Weight1.59 pounds
A True RMS professional multimeter.
Capable of highly accurate readings.
Measures voltage, current, resistance, frequency and capacitance.
The offset dial may lead to mistakes.
The Etekcity MSR-R500 Digital Multimeter is a value winner that will provide you with fast, accurate information so you can complete your task and move on with confidence. It features manual ranging and samples at a rate of 3 times per second. It provides a data hold button, has protective rubber reinforcement at the corners to guard against drops and impact damage and comes with a 1-year limited manufacturer’s warranty. There are plenty of safety features in play as well including overload protection on all ranges. Every entry on our list is a great value in and of itself but this one takes the top spot. If you are a handyman and love tools, make sure you also check our guide to the best tape measures.
2000 PSI maximum display capacity
Suitable for continuity tests
- Weight8 ounces
A relatively lightweight all-purpose electronic multimeter for around the house.
With a protective rubber sleeve, it will survive most drops.
The overload protection will no doubt come in handy at some point.
Manual ranging only.
AstroAI makes some seriously effective, attractively priced multimeters for homeowners, handymen and professional electricians alike. This is a manual range meter that has a wealth of practical and safety functions and will measure voltage, resistance, ohms, and continuity. It is not, however, capable of measuring AC current. So keep that in mind. Because of its manual range setup, it may be more suited to experienced electricians but there’s nothing here a dedicated DIYer shouldn’t be able to master. AstroAI Digital Multimeter comes with 1-year limited manufacturer’s warranty, built-in kickstand for hands-free operation and a very durable ABS plastic body. A really handy tool for your tool bag.
2 test leads
Manual range selection
Double fuse protection
- Weight8.8 ounces
Plenty of rubber padding to withstand rough treatment.
The backlight is easy to engage and very effective.
Great for home, auto or business use.
Dial-driven functionality is easy to get your head around.
Bigger than you think it is.
Fluke has been producing multimeters since 1948. Today, its latest version; the 87-V Digital Multimeter boasts of everything you have ever wished for in a multimeter. To start with, it offers a strong and durable construction that can withstand any working environment. And although a very lightweight device, it still manages to pack in manage features at a very pocket-friendly price. Such features include its rubber protective case that doubles as a kickstand for hands-free operation, as well as a high-resolution LCD display screen that’s larger and brighter than previous versions. And on top of that, everything in the device is well-spaced; from the buttons to the selector dial and jack inputs.
Additionally, the measurement accuracy of infinitesimal millivolt changes, lets the Fluke 87-V speaks for itself, as it considered to be the best multimeters when it comes to accuracy. On top of all that the tool has a backlight that makes night work seamless. In fact, you can adjust the brightness of the light with its 3-level regulator. And although it does not support automatic range selection, it can be manually chosen using the dial. Overall, this is a great multimeter that can serve you for a considerable length of time. It is your go-to option for troubleshooting industrial and household equipment and it boasts of durable and resilient construction.
4 AA batteries required
High-resolution LCD display
- ModelFLUKE 87-V
- Weight2.71 pounds
The 3320 from Innova is an auto-ranging meter that eliminates the need to spend time dialing in the correct range when making measurements. It provides you fast, accurate measurements across the AC and DC spectrum and is ideal for residential or automotive use. From checking the batteries for your various electronic devices to diagnosing issues with automotive circuits and much more the 3320 is a dependable time saver. It’s one of the top multimeters we tested for ease of use and the color-coded battery test system is handyman’s joy. You can spend a lot more on a multimeter and not surpass the convenience and performance of the Innova 3320. Definitely a tool you need to have in your tool box.
Auto ranging multimeter for fast measurements.
Ideal for home, work, and car.
Large clear LCD display.
Corner bumpers provide drop protection.
- Weight8 ounces
Auto-ranging makes life much simpler for do-it-yourselfers.
The built-in wrist strap makes it easy to use in tight spots.
The LCD readout is one of the largest on the market.
It’s affordable, compact and versatile.
The auto-shutdown beeps can be a bit much.
This AstroAI is definitely in the running for best digital multimeter. It’s an outstanding overall value that’s a must-have for advanced do-it-yourselfers. The True RMS capability and robust safety features mean it’s a great choice for pros as well. With auto-ranging, you can measure voltage, current, resistance, continuity and more quickly and with a high degree of accuracy. The body of TRMS 6000 is fashioned from durable ABS plastic that naturally impacts resistant and there is a range of built-in safety features including overload protection. Find more great products like this by checking out our guide to the best digital calipers.
Both Auto-ranging and True RMS capability.
Test voltage, current, resistance and more.
Overload protection at all ranges.
Durable ABS shell.
3-year limited warranty.
- Weight1.34 pounds
Outstanding build quality, very durable.
Easy to use even for weekend DIYers.
Helps with myriad tasks around the house.
3-year warranty is among the best in the business.
If it’s the affordable quality you’re looking for the TRMS 6000 from Thsinde may be the answer to your prayers. While it’s not the most robust multimeter on the market it’s nonetheless feature rich and generally reliable. It measures everything from voltage, current, and resistance to a diode, NCV continuity and more. In all, there are 10 tests you can perform which should be more than enough for the average do-it-yourselfer. Just don’t drop it. And it is small enough to fit your tool belt.
Automatic overload protection.
Short circuit protection.
Automatic power off to save battery.
Backlit LCD display.
AC/DC current, voltage, resistance and more.
- Weight1.57 pounds
Very affordable for such a well-built device.
Performs a wide variety of functions both AC and DC.
True RMS and auto-range function mean it’s both easy to use and accurate.
Not a lot of impact protection.
The Klein MM600 Electronic Multimeter represents another success for this well-known brand. It’s extremely well built with the rigors and dangers of the commercial job site squarely in mind. It provides a wealth of testing capabilities including the 3 standard measures as well as capacitance, temperature and more. It has plenty of built-in safety features, a low battery indicator and serves up quick, accurate readings via auto-ranging. It covers just about all the bases and even has its own durable, attractive carrying case to keep it clean. Be sure to also check out our list of the best stud finders for more great items like this.
AC/DC up to 1000V.
Low battery indicator.
Affordable and built to last.
Measures voltage, current, capacitance and more.
Auto-ranging for fast results.
- BrandKlein Tools
- Weight10.6 ounces
One of the toughest multimeters on the market.
Will appeal to DIYers, experienced pros and everyone in between.
Auto-ranging saves less experienced folks a ton of headaches.
Comes with a handsome, durable carrying case.
The LCD display might be a little too crowded.
With the FLIR DM90 you get True RMS precision in your measurements. Troubleshoot and repair a wide range of electrical components, devices, and systems with confidence. The DM90 arrives fully calibrated and ready to accompany you to the job site. The rich feature set includes VFD (Variable Frequency Drive) mode, LoZ, and µA (Microampere) current measurement capabilities. Busy pros don’t have time to mess around with imprecise measurements and the DM90 from FLIR should help them stay on schedule while maintaining the highest of standards. If you love handy tools, make sure you also check our guide to the best moisture meters.
A wide range of functions.
Will withstand drops up to 3 meters.
Built-in LED work light.
True RMS accuracy.
- Weight1.2 pounds
Provides accurate, reliable readings up to 1000V AC/DC.
Has one of the richest feature sets available.
Built-in LED work light is a time and effort saver.
The control panel may confuse non-electricians.
Multimeter Buying Guide & FAQ
How We Chose Our Selection of Multimeters
Brand - There are dozens of companies that make multimeters. As such separating the wheat from the chaff, in this case, was not easy. In the end - because electrical work can be downright dangerous and because the electricians we consulted recommended we do so - we deferred largely (though not exclusively) to the better-known brands with established reputations.
Reviews - Because these are sensitive electronic devices that could cause harm if used improperly we didn’t give much weight to overly simplistic 2-word reviews (“Works great!”). Instead, when we did look at reviews, we focused mostly on those that addressed specific aspects of each device. At the end of the day, however, we always draw our own conclusions, although in this case, we did reach out to licensed electricians for guidance and assistance.
Accuracy - Accuracy has to do with how closely the value the meter is showing relates to the true value of the thing being measured. Accuracy is typically measured in one of two ways: either the percent of range or the percent of reading. The percent of reading is the more accurate mechanism since it is applied equally regardless the measurement.
Durability - Electrical Multimeters are like most other things in that you tend to get what you pay for. Although a cheap multimeter might do a fine job providing accurate readings you run the risk with some (not all) that if you drop it once it will be useless afterward. The multimeters we chose for this list are all well-built and able to take a pounding (within reason of course).
Price - We believe that when your life is on the line quality matters. As such, there are a fair number of high-end multimeters on our list. At the same time though when we find one that holds its own when our experts put it through its paces it’s going to get on the list regardless of its price. Our single guiding principle with these important devices is that they are quality instruments that will not put the user in danger.
Types of Multimeters
Analog - An analog multimeter is an older design but still preferred by a lot of professionals because it not only provides a measurement but context as well. Another reason analog multimeters are still popular is that they provide continuous real-time readings. As opposed to digital meters that often present what is in effect a snapshot. Continuous readings are particularly important when working with capacitors. Many consider analog to be the best multimeter type. But they’re not perfect. For instance, they don’t do such a great job giving precise readings of resistance.
Digital - The digital multimeter sports a much simpler LCD display that provides numerical readouts of the 3 common electrical characteristics (voltage, current, and resistance) and more in a clear, concise fashion. Digital multimeters are unable to provide the context in the sense that they don’t provide a graphical representation of what’s going on. Instead, they take a quick snapshot of the circuit and present it to you as a number. Still, there is a multitude of professional electricians and electrical engineers who use only digital multimeters and wouldn’t have it any other way.
Features To Look For In the Best Multimeters
Number of Functions - Will you only be measuring only AC or will you need to measure DC as well? Do you need a thermometer? Do you need to measure capacitance? The fact is, there are dozens of different functions and we don’t have space to list them all here. Suffice to say that you should determine ahead of time which ones you’ll need and then make sure your meter performs them.
Auto vs Manual Ranging - Most DIYers are going to naturally (and wisely) gravitate to auto-ranging multimeters because they allow you to get your reading without having to know the capacitance, voltage, resistance and other values of the thing you are testing. The automatic multimeter does all that for you. A manual multimeter, by comparison, requires you to know the above-mentioned characteristics and input them by hand to get your measurement.
Display - People tend to prefer analog multimeter displays over digital for the same reason they prefer analog clocks to digital clocks: context. With a traditional circular clock, you see the time but you also get an idea of how long it is until lunchtime or quitting time, and you see the hands moving. Whereas with a digital display all you get is a number. With multimeters, many people prefer the analog display because it provides them with the real-time context that lets them better understand or anticipate trends. That said, there are plenty of people who have no problem with the digital readout.
Ease of Use - Most electricians will be able to make quick work of just about any multimeter on the market. If you’re not a pro, however, you would be wise to spend some time familiarizing yourself with some basic electrical principles and terminology before you even start shopping for a multimeter. This will allow you to make sense of what you’re looking at as you shop and find one that is easy for you to use.
Safety Features - You’re going to want to make sure you get a multimeter that has the proper CAT rating. “CAT” in this case means “category” and there are 4 main ones ranging from CAT I (home electronics and the like) to CAT IV (utility level measurements). Overload protection, safety cutoff, appropriate voltage range, and reverse polarity are other safety features you’ll see in the best multimeters.
Design - When it comes to something like an electronic multimeter aesthetic considerations are subservient to functionality and safety. That said, design considerations will come into play if you typically work on construction sites. In that case, you want something that is easy to see. So yellow or bright orange are good color choices. Some multimeters designed for commercial electricians will also have corner bumpers to protect them in case they are dropped.
Extra Features - If you are a DIYer who is buying a multimeter to use around the house or on the car it’s likely you don’t need a lot of special features. Commercial electricians, however, may want things like pressure, temperature, capacitance, and frequency. Some high-end multimeters have graphic displays that provide real-time AC measurements. Others provide data logging capability.
Multimeter Safety Tips
Inspect for damage - Before you fire up your multimeter for the first time inspect it carefully to see if it shows any signs of physical damage the could put you at risk or compromise accuracy.
Inspect the leads - If either of the leads are damaged it could expose you to potential injury. Give them a close inspection before using your multimeter.
Avoid shocks - You should always assume that each and every electrical component is live. Failing to make this assumption can result in injury.
- If you insert a lead into the wrong port it can produce a short circuit.
- When measuring AC make sure the multimeter is set to AC measurements.
- Exercise a high degree of caution around capacitors as they often hold a substantial charge.
- If the unit has an “off” button turn it off after every use.
Q: What is a Multimeter?
A: A multimeter is a standard diagnostic tool for electricians and other technicians who typically deal with electrical components or electrical fields. Many DIYers also use them when performing tasks around the house that involve wiring, circuits and the like. The electrical multimeter tests standard electrical values such as voltage, current, resistance and more.
Q: Who should own a Multimeter?
A: The vast majority of multimeters are owned by electricians, electrical engineers and technicians such as those who work on HVAC systems. They are also popular with DIYers who use them when installing light fixtures, ventilation fans and the like. Professional electricians depend on multimeters the way a professional carpenter relies on their tape measure and level. Inspired amateur DIYers should consider getting one with auto-ranging as it will greatly simplify the process.
Q: What are some of the common electrical properties that a Multimeter can determine?
A: Voltage - Voltage is generally defined as the amount of potential energy between two given points on an electrical circuit. There is a difference in charge between one point and the other and this difference is called “volts” (after Alessandro Volta who invented the chemical battery).
Current - Current is defined as the amount of charge flowing through a circuit during a given period of time. In the case of electrical accidents, it is not the voltage that kills people but the current. Current is measured in Amperes (Amps) and it typically doesn’t take more than 10 milliamps (10 mA) to cause one to lose control of their muscles and as little as 1/10 of 1 amp for only 2 seconds to cause death. As such getting accurate measurements of current is crucial.
Resistance - No one running through dense underbrush will be able to run as fast as they would if they ran on an open track. Why? Because they face much more resistance running through the brush. It’s essentially the same with electricity. A circuit with higher resistance has less current moving through it than a circuit with low resistance. Resistance is typically expressed by “Ohms” and represented by the Greek letter “omega” or “Ω”.
Q: What is a True RMS Multimeter?
A: A True Root Mean Square or True RMS multimeter is a type of multimeter that measures the level of AC (alternating current) or voltage. The RMS suggests the effective level of the alternating current as opposed to other types of multimeters designed to measure the average level of AC current. The RMS is used to calculate current or voltage levels when precise measurements are needed.