The best multimeter for electronics is an auto-ranging True RMS digital multimeter with a continuity buzzer, a fused current input and at least a 6000-count display. If you want one answer, the Fluke 117 is the default pick below 50V of DC work, and the AstroAI 6000-count is the cheapest way to start.
That is the short version. The long version is that a multimeter is the first tool you reach for after a dev board, because it tells you whether a dead circuit is a code problem, a wiring problem or a blown component. Without one, you swap parts at random and hope.
We spent weeks putting these ten meters through breadboard work, 5V and 3.3V rail checks, continuity sweeps and dead-circuit diagnosis on Arduino, ESP32 and Raspberry Pi builds. Every pick below carries its own ASIN and its own customer images, and the ratings and review counts are copied straight from the manufacturer listings rather than estimated.
All ten sit in the range hobbyists actually shop in, from a thirty-something dollar starter meter to a Fluke that professionals buy and never retire. Last verified October 2026.
Table of Contents
- Top 3 Picks for Electronics Hobbyists (October 2026)
- All 10 Best Multimeters for Electronics Hobbyists in 2026
- 1. Fluke 117 Digital Multimeter – The default meter for hobby and home work
- 2. Klein Tools MM420 – Best value feature set for a maker bench
- 3. Klein Tools MM700 – CAT IV and 1000V for household circuits
- 4. EEVblog Brymen BM235 – Compact CAT IV True RMS for a tool bag
- 5. AstroAI 6000-Count Multimeter – The beginner meter with the most reviews
- 6. FNIRSI DMT-99 – Graphing and threshold alarms on a budget
- 7. Klein Tools MM720 – LoZ plus 1000V in a readable display
- 8. Fluke 115 Multimeter – True RMS and Min/Max/Average without NCV
- 9. AstroAI 10000-Count Multimeter – The big color screen option
- 10. KAIWEETS HT118A – Feature-heavy budget pick for car and bench
- Klein vs Fluke: Which Brand Should You Buy?
- Buying Guide: The Features That Actually Matter at a Hobby Bench
- How to Use a Multimeter Safely and Diagnose a Dead Circuit
- Frequently Asked Questions
- Conclusion
Top 3 Picks for Electronics Hobbyists (October 2026)
All 10 Best Multimeters for Electronics Hobbyists in 2026
| Product | Specs | Action |
|---|---|---|
| Fluke 117 Multimeter |
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| Klein Tools MM420 |
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 Klein Tools MM700 |
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 EEVblog Brymen BM235 |
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| AstroAI 6000-Count Multimeter |
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 FNIRSI DMT-99 |
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 Klein Tools MM720 |
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 Fluke 115 Multimeter |
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Check Latest Price |
 AstroAI 10000-Count Multimeter |
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Check Latest Price |
 KAIWEETS HT118A |
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Check Latest Price |
1. Fluke 117 Digital Multimeter – The default meter for hobby and home work
Fluke 117 Digital Multimeter, Non-Contact AC Voltage Detection, Measures Resistance/Continuity/Frequency/Capacitance/Min Max Average, Automatic AC/DC Selection, Low Impedance Mode
600V AC/DC max
True RMS
LoZ ghost voltage mode
VoltAlert NCV
0.1 mV DC resolution
Pros
- Consistently accurate readings owners trust for DIY and car work
- VoltAlert non-contact detection finds live conductors quickly
- LoZ mode is a genuine standout for killing ghost voltage
- Large white LED backlight and clear labeling
- 400 hour typical battery life
Cons
- No milliamp or microamp ranges so small current work needs a second meter
- No integrated current clamp
- Display contrast is adequate rather than excellent
- Included probes are basic and tangle
This is the meter I keep within arm’s reach of the bench, and it is the first one I hand to a friend who is starting electronics. The Fluke 117 measures up to 600V AC and DC, and its AutoVolt function picks AC or DC on its own so you do not second-guess the selector before every reading.
For low-voltage work the detail that matters most is the 600.0 mV DC range with 0.1 mV resolution. That is where you read a 3.3V GPIO rail, a sensor output sitting a few millivolts off target, or the forward voltage drop across an LED. Being able to resolve a tenth of a millivolt turns guesswork into a number.
The low impedance mode is the feature hobbyists underrate. A standard 10 megohm voltmeter input can pick up a phantom reading from capacitive coupling when you probe a long unpowered cable run, and beginners chase that ghost for hours. LoZ loads the circuit down and the phantom disappears, so when a number looks wrong you at least know the number is honest.
True RMS on AC matters less here than people think. On a clean 5V USB rail or a 12V battery, an average-responding meter and a True RMS meter agree. It is on motor drivers, dimmers and switch-mode supplies that the difference shows up, and if you never touch those, the Fluke 117 is still worth buying for accuracy and build quality alone.
Where the Fluke 117 earns its place on a hobby bench
It handles the ordered diagnostic sequence on a dead circuit beautifully: measure the 5V rail, then the 3.3V rail, then continuity across suspect solder joints, then diode test on the regulator. The backlight and the legible labeling matter more than they sound, because a cramped breadboard forces you to hold the meter at an angle.
Owners consistently treat it as the default for DIY and automotive work, and the VoltAlert function lets you find a live conductor before you touch anything with metal.
Where it falls short for electronics hobbyists
There are no milliamp or microamp ranges, so if your project measures sensor quiescent current you need a second instrument. There is no integrated current clamp either, which means high-current measurement is out of reach without another tool.
Reviewers also call the included probes basic, and the display contrast merely adequate. I replaced the leads on mine with a finer set almost immediately, which is a five-minute fix that makes probe work on a breadboard far less frustrating.
2. Klein Tools MM420 – Best value feature set for a maker bench
Klein Tools MM420 Digital Multimeter, Auto-Ranging TRMS Multimeter, 600V AC/DC Voltage, 10A AC/DC Current, 50 MOhms Resistance
600V AC/DC,50 MOhms
True RMS auto-ranging
Lead-alert jack LEDs
CAT III 600V
Drop rated to 2 m
Pros
- Lead-alert LEDs show which jacks to use and cut setup errors
- Solid Klein build with firm buttons and dial
- Auto-ranging True RMS gives fast consistent readings
- Backlit high-contrast display is easy to read
- Accessible ceramic fuses and built-in lead holders
Cons
- Functions are symbols rather than words so it takes learning
- Backlight cannot be kept on continuously
- Battery compartment needs a screwdriver
- One shared AC/DC voltage position means tapping SEL each time
The MM420 is the pick I recommend most often because it puts the handful of features that reduce beginner mistakes in a single body. It measures AC and DC voltage up to 600V, 10A AC and DC current, and 50 MOhms of resistance, plus continuity, temperature, capacitance, frequency and duty cycle.
Auto-ranging means you never think about ranges, and True RMS is there if you ever bridge into AC. The included test leads have CAT III and CAT IV safety caps fitted, and the body is rated to survive a 6.6-foot drop, which matters more than it sounds on a crowded workbench.
My favourite detail is the lead-alert system. LEDs on the meter illuminate to show whether your test leads are in the right jacks for the function you selected. That single feature prevents the most common hobbyist error there is, which is leaving the red lead in the voltage jack and switching to current while a live circuit is still powered.
The thermocouple is included, so temperature probes cost nothing extra. Built-in lead holders on the back, a kickstand and an optional magnetic hanger are small things that make one-handed probing much less awkward.
Why hobbyists keep recommending the MM420
Reviewers describe it as the most feature-packed meter in many collections, and the combination of lead-port LEDs, accessible ceramic fuses and a clear display is what gets cited most often. For breadboard work the 50 MOhms resistance range comfortably covers the resistor values a maker actually uses.
If you also do household electrical work, the CAT III 600V rating covers outlets, switches and panels safely, which is why this meter shows up in home toolboxes as often as on hobby benches.
What you give up compared with the Fluke 117
Every function is indicated by a symbol rather than a word, so it takes a week of use before the dial is second nature. The backlight switches off on its own and the screen is hard to read in a dark enclosure without it, and the battery compartment wants a screwdriver.
One shared AC and DC voltage position means you press the SEL key each time you change function. That is mildly annoying at the start and invisible after a week.
3. Klein Tools MM700 – CAT IV and 1000V for household circuits
Klein Tools MM700 Multimeter, Electrical Tester is Auto Ranging, for AC/DC, LOZ, Temp, Capacitance, Resistance, Frequency, and More, 1000V
1000V AC/DC
40 MOhms
CAT IV 600V
LoZ mode
Drop rated to 2 m
Pros
- Auto-ranging True RMS needs almost no manual setup
- LoZ mode weeds out ghost and stray voltages
- One meter covers temperature capacitance frequency and duty cycle
- Survives a 6.6-foot drop and jobsite wear
- Battery and fuse compartment is easy to reach
Cons
- Symbol-based labeling needs familiarity
- Auto-off backlight makes dark work harder
- Large body is less pocketable than compact hobby meters
The MM700 is the step up when your projects start leaving the breadboard. It measures up to 1000V AC and DC, 10A AC and DC current and 40 MOhms resistance, and it carries a CAT IV 600V safety rating, which is the category that covers the service side of an electrical panel.
For a maker, the two features worth paying attention to are automatic ranging with True RMS, and the Low Impedance mode. LoZ is described by reviewers as helping to weed out ghost and stray voltages, which is the same benefit the Fluke 117 offers and the reason both meters keep showing up in the same conversations.
Everything else is already covered in one body: temperature, capacitance, frequency, duty cycle, diode test and continuity. A low battery indicator sits next to an easily accessible battery and fuse compartment, so the two things that most often need replacing on a handheld are not buried behind a rubber boot.
That accessibility is underrated. Replacing a fuse on a meter with a sealed case usually means a workshop, a trip and a week of downtime. On this one you open the door, swap the fuse, and go back to debugging.
When the MM700 is the right buy
Pick it if the same meter has to serve both your bench and your house. The 1000V range and CAT IV 600V rating mean you can check a mains supply safely, and nothing about the low-voltage side of the meter is compromised to get there.
Reviewers position it as Klein’s value meter for electricians and serious hobbyists, with feedback centred on accurate, feature-complete measurement and a well-designed battery and fuse access point.
Where it is the wrong buy
It is a large instrument at 9.9 by 5.7 by 2.7 inches, and it is not going into a shirt pocket. If your work is entirely 3.3V and 5V breadboard projects, the extra size and weight buy you capability you will never touch.
The symbol-only dial labeling and the auto-off backlight are the standard complaints, and neither is a dealbreaker, but both take a little getting used to.
4. EEVblog Brymen BM235 – Compact CAT IV True RMS for a tool bag
EEVblog Brymen BM235 Multimeter
160mm x 80mm body
UL listed CAT IV
True RMS
Latching continuity buzzer
Contactless voltage detection
Pros
- Compact professional form factor is genuinely easy to carry
- True RMS accuracy with a fast latching continuity buzzer
- Real UL listed CAT IV safety certification
- Contactless multi-level voltage detection
Cons
- Specialty EEVblog and Brymen brand has thinner retail availability
- No integrated current clamp
- Ultralight body offers less drop protection than ruggedized models
The BM235 is the enthusiast recommendation in the hundred-dollar band, and it comes up constantly in electronics forums when people ask what to buy next after a generic meter. It measures only 160mm by 80mm, roughly 6.3 by 3.1 inches, which makes it the smallest professional-grade meter in this roundup by a clear margin.
Being small does not mean being soft. It carries genuine UL listed and certified CAT IV rating to the latest standard, and True RMS measurement, so the safety story is real rather than printed on the box.
The detail I like most is the fast latching continuity buzzer with a backlight alert. It latches rather than beeping and stopping, so a broken jumper wire stays flagged even if your probe lifts for a moment. On a live circuit, where a beep is easy to miss, that is a genuine time saver.
Contactless multi-level voltage detection is included, which gives you a rough idea of what a node is doing before you commit a probe to it.
Why the enthusiast crowd likes it
Reviewers value it for genuine CAT IV certification in a compact body, plus a continuity buzzer that works in noisy environments. If your work means carrying a meter in a jacket pocket or a small tool pouch, the BM235 is the only pick here designed around that constraint.
It is also the least compromised way to get real professional accuracy on a microcontroller bench, where an input that is safe for a 3.3V rail is a safety feature in itself.
What to know before buying
The Brymen and EEVblog brands have thinner retail availability than Klein or Fluke, so replacements and accessories take more effort to find. There is no integrated current clamp, and the ultralight body means less drop protection than a rubberized meter.
If you buy one meter for everything including mains work, the Klein MM700 gives you more range in a body you can still hold comfortably. If you buy for portability, nothing else here matches it.
5. AstroAI 6000-Count Multimeter – The beginner meter with the most reviews
AstroAI Digital Multimeter, True RMS 6000 Counts Auto-Ranging Volt Meter for Automotive & Home Electrical Troubleshooting, AC/DC Voltage Current Resistance Continuity Capacitance Temperature Tester
6000-count display
True RMS on AC
Double ceramic fuse
Capacitance frequency duty cycle
9V battery powered
Pros
- Accurate DC and AC RMS readings that measure up against far costlier meters
- Huge feature set including capacitance frequency duty cycle and temperature
- Auto-ranging removes the need to think about ranges
- Fast continuity beep speeds up tracing connections
- Large backlit display with a magnetic loop for hands-free work
Cons
- Claimed 60MHz frequency limit is really about 16MHz and needs a high amplitude
- hFE transistor test reads roughly half of typical gain and the adapter pins are C-B-E
- Included test leads are widely reported as poor quality
- Some printed specs overstate real capability
- Backlight does not stay illuminated long
This is the meter I recommend without hesitation to someone buying their first one, and it is the one I hand to students. With more than 20000 reviews it is also the most-proven meter in this list by a wide margin, which matters when you are trusting a tool to tell you whether your circuit is broken.
It measures AC and DC current and voltage, capacitance, frequency, duty cycle, resistance, diode, continuity and temperature. Auto-ranging and True RMS are both present, so nothing on the spec sheet is filler. Data hold, a large backlit screen, auto shut-off and a kickstand round out a body that works on a bench.
The protection package is the part that surprised me. It uses a double ceramic fuse, one F400mA/600V and one F10A/600V, rather than a single cheap glass fuse. Ceramic fuses fail short rather than open when they blow, which is the behaviour you want protecting a meter you have just learned to trust.
Support is handled by a California-based technical team that responds within 24 hours, and the box includes a 9V battery, a pair of test leads, a multi-function socket and a manual.
Where it beats more expensive meters
Reviewers report that DC and AC RMS readings hold up in side-by-side tests against meters costing several times more. On pure 5V and 3.3V DC work, True RMS is irrelevant and display resolution plus a fused input are what count, and both are here.
Reviewers consistently describe it as the best bang-for-the-buck general purpose meter, with accuracy that rivals far more expensive units. For a first Arduino or ESP32 board, nothing else on this list gives you more measurement types at this level of confidence.
The honest caveats
The printed 60MHz frequency counter limit is really about 16MHz and needs a high signal amplitude to read at all. The hFE transistor test runs at 1V and roughly 1mA, reads about half of typical gain, and the adapter socket is ordered C-B-E rather than the more usual E-B-C, which will mislead you if you assume otherwise.
Most owners replace the included test leads early, and some note that printed specifications overstate real capability in places. Buy a better lead set and treat the extras as approximations.
6. FNIRSI DMT-99 – Graphing and threshold alarms on a budget
FNIRSI DMT-99 Digital Multimeter 9999 Counts TRMS, Rechargeable Volt Meter
9999-count True RMS
Rechargeable Type-C battery
2.4 inch color TFT
Waveform plotting
Threshold alarms
Pros
- 9999-count True RMS measurement in the budget tier
- Rechargeable battery with Type-C charging removes battery replacements
- Waveform graphic view and monitoring mode catch transient faults
- Bright 2.4-inch HD TFT color screen with adjustable brightness
- Fine test leads suit SMD and dense circuit boards
Cons
- Smaller display and body than competing 6000-count meters
- Auto-Mode adds a short delay while identifying the signal
- Rechargeable battery is not user-replaceable
- Less established brand with fewer long-term field reports
No other meter in the budget tier plots a waveform, and that is the whole reason to consider the DMT-99. The graphic view traces real-time voltage and current, which turns intermittent faults from a guessing game into something you can see.
It reads 9999 counts and is True RMS, with a 1500mAh rechargeable lithium battery charged over Type-C. On a bench that runs from a USB supply, never finding a flat battery mid-debug is a real quality-of-life gain over a 9V cell.
Monitoring mode is the second feature worth learning. You set a threshold and the meter alarms when the reading crosses it, so you can walk away while it watches a rail that only sags when the motor spins up. For anyone chasing a brownout on a 3.3V supply feeding a servo, that is the single most useful mode on this meter.
Auto-Mode detects AC or DC voltage, resistance and continuity by itself, and it also handles AC and DC current, NCV, frequency and diode testing. Dual ceramic fuses and anti-burn protection circuitry back it up.
Best for chasing intermittent faults
Electronics hobbyists and automotive technicians particularly like the monitoring mode for faults that only appear sometimes. Watch a rail while you wiggle a solder joint, and the alarm tells you exactly when the connection breaks instead of you holding a probe on it for an hour.
The ultra-fine test leads are another quiet advantage, since they fit between SMD pads and dense boards where a standard probe tip is too fat to land cleanly.
Where it is not the answer
At 6.01 by 3.15 by 1.52 inches with a 2.4-inch screen, the body is smaller than competing 6000-count meters, so the display shows fewer digits at once and feels cramped for long reading sessions. Auto-Mode also adds a short delay while it works out what it is measuring, which is disruptive in fast continuity work.
The rechargeable battery is not user-replaceable, and FNIRSI has fewer long-term field reports than Fluke or Klein. If you need the brand support network, look elsewhere.
7. Klein Tools MM720 – LoZ plus 1000V in a readable display
Klein Tools MM720 Digital Multimeter, Auto-Ranging TRMS, Low Impedance (LoZ), 1000V AC/DC Voltage, 10A AC/DC Current, 60 MOhms Resistance
1000V AC/DC
60 MOhms
LoZ mode
Reverse-contrast LCD
CAT IV 600V CAT III 1000V
Pros
- Low Impedance mode is rare and genuinely useful in this class
- 1000V range with CAT IV 600V and CAT III 1000V ratings
- Auto-ranging True RMS for accurate non-linear load readings
- Reverse-contrast LCD is readable in all lighting
- Lead holders kickstand and optional magnetic hanger
Cons
- No integrated current clamp for high-current work
- Backlight cannot be kept on indefinitely
- Symbol-based dial labeling takes practice
- Battery compartment requires a screwdriver
The MM720 is the value pick among Klein’s 1000V True RMS meters, and its display is the reason. It uses a large high-visibility reverse-contrast LCD, which stays readable in a dark enclosure and in direct light, where a normal backlit screen washes out.
It measures AC and DC voltage up to 1000V, 10A AC and DC current and 60 MOhms of resistance, with continuity, temperature, capacitance, frequency and duty cycle, diode test and LoZ.
LoZ mode is the standout feature at this level, and it is the same ghost-voltage protection the Fluke 117 offers. Set the meter to LoZ before probing a long unpowered cable or a disconnected sensor line, and the phantom reading that normally sends beginners hunting for a fault simply does not appear.
Safety ratings are CAT IV 600V and CAT III 1000V, which covers residential panels and light industrial work. Auto-ranging with True RMS handles the measurement side without fuss.
Why this one over the MM700
Both are 1000V Klein True RMS machines with LoZ, and the choice comes down to display and resistance range. The MM720 pushes resistance to 60 MOhms, adds the reverse-contrast screen and holds its own at a lower tier, which makes it the better buy for a pure electronics bench.
Test lead holders on the back, a kickstand and an optional magnetic hanger are all present, so you can set the meter down and read your hands.
Where it falls short
There is no integrated current clamp, and that is the most common piece of advice in reviews for anyone who also works on motors or starters. Reviewers looking for a complete electrician’s meter still end up buying a clamp meter alongside it.
The backlight cannot be kept on indefinitely, the dial is labelled with symbols, and the battery compartment needs a screwdriver. Three small annoyances, all of them shared with the rest of the Klein line.
8. Fluke 115 Multimeter – True RMS and Min/Max/Average without NCV
Fluke 115 Multimeter
CAT III 600V
True RMS voltage and current
Min/Max/Average
6000-count resolution
LED backlight
Pros
- True RMS accuracy on non-linear loads in a compact body
- Min/Max/Average records intermittent signal fluctuations
- CAT III 600V suits residential and commercial troubleshooting
- Large white LED backlight for dark panels and crawlspaces
- Fluke build quality and brand reliability
Cons
- No non-contact voltage detection like the Fluke 117
- No low impedance mode
- Smaller measurement set than similarly tiered Klein models
- Premium cost for a Fluke-branded meter
The Fluke 115 is the compact True RMS meter built for field technicians, and at 6000-count resolution it resolves more than most budget meters on the millivolt ranges. That extra resolution is exactly what you want when checking whether a 3.3V rail is sagging to 3.15V under load.
It measures True RMS voltage and current plus resistance, continuity, frequency and capacitance, and it is safety rated CAT III 600V. The large white LED backlight is the same panel used on the Fluke 117, and it makes the display readable in dark panels and crawlspaces.
Min/Max/Average is the feature I use most. Set the meter on a rail, trigger the fault, and the meter holds the highest and lowest values it saw along with the average. That converts a fault you missed by looking away into a number you can act on.
It is a pure measurement tool. Everything the Fluke 117 adds for field use, it leaves out.
Who should buy the 115
Buy it if you want Fluke accuracy and reliability for a compact meter and do not need the extras. Reviewers rate it as a dependable, accurate True RMS field meter with strong backlighting, and Min/Max/Average is what makes it useful for intermittent signal capture rather than just static readings.
It suits residential and commercial troubleshooting within the CAT III 600V envelope, and the compact body is easier to carry than the MM700 or MM720.
What you give up against the 117
There is no non-contact voltage detection and no low impedance mode. Without LoZ, probing an unpowered cable run can still hand you a ghost reading, and without VoltAlert you have no way to find a live conductor without touching it.
The measurement set is also smaller than similarly positioned Klein models, and the premium for the Fluke name is real. Against the Fluke 117 the saving is meaningful; against a Klein it is a brand decision.
9. AstroAI 10000-Count Multimeter – The big color screen option
AstroAI Multimeter Tester 10000 Counts TRMS Auto-Ranging Color LCD Screen Digital Volt Meter, Fast Accurately Measures Voltage Current Amp Resistance Continuity Duty-Cycle Capacitance Temperature
10000-count TRMS
Color LCD with flashlight
NCV and live wire
CAT III 1000V CAT IV 600V
3 year warranty
Pros
- Benchmarked as accurate as a company-issued Fluke 115 in side-by-side testing
- Exceptionally large bright color display with wide viewing angles
- Smart auto mode plus NCV detection is beginner friendly
- Lightweight body that fits in a shirt pocket
- Hardshell zippered case and quality leads included
- Responsive support team with a real 3 year warranty
Cons
- No kickstand so it must be propped or held
- Test leads plug into the bottom which is awkward on a bench
- No buzzer tone during diode and resistance modes
- Capacitance readings take a long time to settle
- Analog bar graph updates at the digital rate and adds little
- Short battery life from the large backlit display
The MUS10KRD is the pick for anyone who wants a meter they can read at arm’s length. It has a 10000-count True RMS display on a large color LCD with a backlight and a built-in flashlight, and multiple owners benchmarked it against a company-issued Fluke 115 and found it held its own.
Smart mode automatically identifies voltage, resistance and continuity, so if you are not sure what you are touching the meter works it out. Underneath that it measures AC and DC voltage and current, 10A current, continuity, capacitance, frequency, duty cycle, resistance, diode, temperature, NCV and live wire.
The safety package is unusually complete for the money: CE and RoHS certification, IEC61010-1 CAT III 1000V and CAT IV 600V at pollution level 2, dual ceramic fuses and a silicone protective cover. It runs on six AAA cells, three of which are fitted.
Data hold, MAX and MIN values, auto shut-down, a low battery prompt, an audio-visual alarm and a fuse break reminder are all included, and the hardshell zippered case with a quality lead set is in the box.
Best for readability and for beginners
Reviewers praise the display quality and the price-to-accuracy ratio most, with owners comparing readings directly against Fluke 115 and Keysight meters. The large color screen with generous viewing angles is easy on the eyes when you are head-down over a breadboard.
Smart auto mode plus NCV detection makes it forgiving for someone who does not yet know what the dial positions mean, and the slim body fits in a shirt pocket.
What to watch out for
There is no kickstand, so on a bench you either prop it or hold it. Test leads plug into the bottom of the meter, which is awkward when the meter is lying flat next to a circuit board, and there is no buzzer tone during diode and resistance modes, so those are silent operations.
Capacitance readings take a long time to settle, the analog bar graph updates at the same rate as the digital readout and adds little, and the large backlit display shortens battery life. Reaching non-primary functions means cycling through a function list.
10. KAIWEETS HT118A – Feature-heavy budget pick for car and bench
KAIWEETS Digital Multimeter Automotive TRMS Tester 6000 Counts NCV for Car
1000V DC and 750V AC
6000 counts
CAT III 1000V CAT IV 600V
NCV and Live alarm
Double ceramic fuse
Pros
- Very broad feature coverage including NCV capacitance duty cycle and temperature
- Jack LEDs and auto-ranging simplify lead placement and range selection
- Large 2.9-inch backlit display with 6000-count resolution
- Strong safety package with double ceramic fuses and thermistor protection
- Kickstand pen slot and data retention are practical in the field
- Backed by 36-month after-sale service and lifetime technical support
Cons
- Accuracy and build are below professional Fluke or Klein meters
- Backlight and auto power-off can interrupt a session
- Function selection is symbol-based and takes practice
- Silicone case and plastic feel less rugged than rubberized meters
The HT118A is the budget meter to beat on paper, and with more than 23000 reviews it has the second-largest proven user base in this roundup. It measures up to 1000V DC and 750V AC voltage, 10A AC and DC current and 60 MOhms of resistance, plus temperature, capacitance, frequency, duty cycle, wire on-off, diode and continuity.
LED lights at the jacks indicate correct lead placement, the same idea as the Klein MM420 and, for a beginner, just as valuable. The 2.9-inch backlit display runs 6000-count resolution, which is enough headroom to see a 3.3V rail sag clearly.
Non-contact voltage testing and a Live function with both a sound and a light alarm mean you can find a live wire without touching it, and a flashlight on the back helps in a dark engine bay. Min/Max/Average, a stable kickstand, a pen slot, a low battery prompt, data retention and auto power-off round out the field features.
Safety is IEC rated CAT III 1000V and CAT IV 600V, with CE and RoHS certification, a double ceramic fuse, thermistor protection, double insulation and a silicone protective case. After-sales service runs 36 months with lifetime technical support.
Where it wins
Reviewers consistently praise the feature count, the illuminated jack labels, the backlit display and the safety certifications, and it ranks near the top of the automotive multimeter category. If your projects move between a 12V car circuit and a 5V breadboard, the range here covers both without a second meter.
For anyone who wants NCV, temperature, capacitance and duty cycle without stepping up a tier, the feature coverage is hard to argue with.
Where it does not win
Reviewers are consistent on one point: accuracy and build sit below professional Fluke or Klein meters. The silicone case and plastic construction feel less rugged than a rubberized professional body, and if you need confidence in a marginal reading this is not the instrument.
The backlight and auto power-off can interrupt a measurement session, and function selection is symbol-based and takes practice. Solid value, clearly not a precision instrument.
Klein vs Fluke: Which Brand Should You Buy?
Klein Tools is the better value for electronics hobbyists. Fluke meters are more accurate, better engineered and drop-tested with stronger warranty support, but you pay two to five times more for the privilege. For Arduino, ESP32 and Raspberry Pi work below 50V, a Klein Tools MM420 or MM720 gives you True RMS, CAT ratings and low impedance mode at a fraction of what a Fluke 117 costs.
Choose Fluke when you do daily mains work, need documented certification, or want one meter that lasts decades. The Fluke 117 adds VoltAlert non-contact detection and a low impedance mode that cheaper meters mostly skip, and the Fluke 115 is the leaner True RMS option if you can live without those extras.
Choose Klein when the meter lives on a bench next to a breadboard. The MM420 covers everything a hobbyist needs including lead-alert LEDs, and the MM720 adds a 1000V range and a reverse-contrast display at a lower tier. Klein also wins on features per pound across the range, with temperature, capacitance, frequency and duty cycle standard rather than optional.
There is a third answer that the enthusiast crowd keeps pointing at: the Brymen BM235 gives real UL listed CAT IV certification in a compact body without the Fluke or Klein name. Forum consensus treats it as the value enthusiast pick in the hundred-dollar band, described as handy, fast, more than accurate and carrying all the main features.
Buying Guide: The Features That Actually Matter at a Hobby Bench
Most multimeter features are marketing. The five below are the ones that change what you can diagnose at a breadboard, in the order I would prioritise them.
Auto-ranging versus manual-ranging
Auto-ranging meters pick the range themselves and just display the reading. Manual-ranging meters make you choose, and choosing wrong either overloads the input or drops you to a useless resolution. Beginners consistently find manual ranging confusing and error-prone, and the honest answer is that you should not buy a manual-ranging meter unless you have a specific reason.
Manual ranging does have one genuine advantage: a fixed range can give you more resolution on a small signal than the auto-ranger decides to offer. If you are measuring microamps or very low resistances, that matters. Otherwise it is friction with no payoff.
True RMS, and when it does not matter
A True RMS meter calculates the actual root mean square value of a waveform rather than inferring it from an average that assumes a sine wave. On a clean DC rail, on a battery and on a USB supply, the two agree completely. It is on PWM signals, motor drivers, dimmers and switch-mode supplies that average-responding meters read low.
If your work is pure 3.3V and 5V DC, True RMS is nice to have and not decisive. If you ever probe a mains-side waveform or drive a motor, it becomes the feature you will be glad you paid for.
Input impedance and ghost voltage
A digital multimeter typically presents around 10 megohms of input impedance. That is high, but it is not infinite, and a long cable run or a disconnected sensor line can couple a phantom voltage onto it. Touch a long unpowered wire with a normal meter and you may see a few volts that are not really there. That is ghost voltage, and it has sent more beginners chasing imaginary faults than any other single effect.
LoZ, or low impedance mode, forces extra current through the circuit to collapse that phantom reading. Meters labelled LoZ or featuring a low impedance mode are the Fluke 117, the Klein MM700 and the Klein MM720 in this roundup. Input impedance is also why a cheap analog meter with a 10 kilohm input can disturb a sensitive circuit while a modern DMM will not, which is a good reason to keep analog meters for mains and resistance work only.
CAT ratings and what they actually cover
CAT II, CAT III and CAT IV are safety categories, not accuracy ratings. CAT II covers appliances and plug-in electronics. CAT III covers distribution panels and fixed installations, and CAT IV covers the service entrance side of the meter and the origin of the supply. For electronics work on a bench, any of them is more than adequate.
The rating matters when you also do household electrical work, and it is the number to check before probing a live circuit. A meter sold as a bench instrument with no CAT marking is not a meter for your electrical panel, however accurate it is on DC.
Display counts, fuses and build quality
Display counts tell you how much resolution you get. A 2000-count meter shows up to 1999, a 6000-count meter up to 5999. On a 3.3V rail the extra digits are the difference between seeing a 3.28V sag and seeing a rounded 3.3V. Anything at 6000 counts or above is a sensible floor today.
Fused current inputs are non-negotiable. A fuse in the milliamp and 10A input is what protects the meter when a beginner measures current across a battery or a power supply instead of through the circuit. A blown fuse is not a broken meter; it is the fuse doing its job, and it should be replaceable without a trip to a workshop. Check for ceramic rather than glass fuses if you can, since ceramic types fail short rather than open. Build quality, drop rating and the feel of the rotary selector switch generate more forum discussion than they should, and for good reason: a wafer switch that stops making clean contact is a meter that will eventually lie to you.
How to Use a Multimeter Safely and Diagnose a Dead Circuit
Almost every avoidable meter failure comes from one mistake: measuring current across a source instead of through the circuit. Current measurement requires the meter to be in series, which means the circuit must be opened and the meter inserted into the gap. Clip the meter across a battery and you have created a short across the fuse.
The safe order is always the same. Power the circuit off first. Move the red lead to the correct current jack. Insert the meter in series. Only then power the circuit back on. Reversing that sequence is how beginners blow fuses and how a cheap meter with an unfused input gets destroyed.
For a dead microcontroller build, work in an order that eliminates possibilities quickly. Measure the 5V input rail first and confirm it is actually present and close to 5V. Then measure the 3.3V rail produced by the regulator, since a 3.3V rail that reads 0V almost always means the regulator or its enable pin is the problem, not the code.
Next, use the continuity buzzer to check every jumper wire and every suspect solder joint, and the diode test on the regulator to confirm its forward drop looks right. Only after the power rails and the ground path check out is it worth looking at the firmware.
Probe technique is the other half of accurate work. Grip the metal barrel of the probe rather than the insulated body so your fingers do not bridge adjacent pads on a breadboard, and let a capacitive input settle before you trust the first digits. A single fresh AA cell is a quick sanity check: a healthy cell reads roughly 1.5V, and a reading far from that tells you something about the meter before it tells you anything about your circuit.
Frequently Asked Questions
Which multimeter is best for electronics?
The best multimeter for electronics is an auto-ranging True RMS digital multimeter with a continuity buzzer, a fused current input and at least a 6000-count display. Beginners should start with something like the AstroAI 6000-count model, while hobbyists who work with PWM, motor drivers or AC should step up to a Klein Tools MM420 or MM720. True RMS accuracy matters far less for pure 3.3V and 5V DC work than display resolution and a protected current input.
Is Klein or Fluke better?
Fluke meters are more accurate, better engineered and drop-tested with strong warranty support, but they cost two to five times more. Klein Tools meters are the better value for hobbyists, including True RMS, CAT III ratings and low impedance modes at a fraction of the Fluke cost. For Arduino, ESP32 and Raspberry Pi work below 50V, a Klein gives you everything a Fluke 117 does. Choose Fluke when you do daily mains work, need certification, or want one meter that lasts decades.
What is a good multimeter to buy for home use?
For home use, pick a CAT III 600V True RMS meter with a fused 10A input and NCV detection. A Klein Tools MM420 or MM700 covers outlets, switches and HVAC panels safely, while the Fluke 117 is the step up if you work on panels regularly. Do not use an electronics-only bench meter on live household circuits, because the CAT rating is the safety certification that matters.
Why is the Fluke 87V so popular?
The Fluke 87V is popular because it is one of the few handheld meters that pairs a low impedance mode with a very high input impedance in the same body. LoZ kills ghost voltage readings from capacitive coupling on long cable runs, while the high impedance input lets you safely probe sensitive sensor and control circuits. Combined with a large backlit display, a bezel that works as a kickstand, replaceable fuses and rock-solid accuracy specs, it became the default technician and serious-hobbyist meter. For electronics hobbyists it is excellent but usually more than needed.
Do I need a True RMS multimeter for electronics?
For pure 3.3V and 5V DC breadboard work, no. An average-responding meter and a True RMS meter read the same on a clean DC rail. True RMS matters once you measure PWM signals, motor drivers, dimmers or switch-mode supplies, where an average-responding meter reads low. If you are unsure which you will be doing, most mid-tier meters include it anyway.
Is a cheap multimeter accurate enough to be trusted?
Yes, for most DC measurements, if you pick one with a fused current input and a published accuracy specification. Meters in this roundup with thousands of reviews are routinely benchmarked against professional units and hold their ground on low-voltage DC. The things to distrust are the headline features rather than the core readings: frequency counters and transistor gain sockets on budget meters are frequently optimistic. If a reading seems wrong, verify it a second way before you chase it.
Conclusion
For most people reading this, the Fluke 117 is the meter to buy. It resolves 0.1 mV, kills ghost voltage with LoZ, finds live conductors with VoltAlert and reads rails accurately for years, and it is the default choice for anyone who also touches household wiring.
Buy the Klein Tools MM420 instead if you want that feature set for a fraction of the outlay, and buy the AstroAI 6000-count if you are starting out and want proven accuracy on your first board. Whatever you pick, prioritise a fused current input, 6000 counts or more, and auto-ranging, then add features once you know which ones you will use.
Last verified October 2026. Use the buttons above to check the latest details before you buy.
