Best Voltage Tester Reviews 2023

Because of their handy use and portable nature, numerous types and makes of voltage testers are on sale in the market today. It’s important you pick a reliable and safe model. We researched some of the best voltage tester brands on the market and reviewed one product from each to make your shopping hassle-free.
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Our Top Choice
Klein Tools NCVT-3 Voltage Tester
Klein Tools is a popular choice for professionals in the electrical and telecommunications industries.
Tells high and low voltage. Highly sensitive. Waterproof for wet environments. LEDs are bright. Turns off to save energy when not in use.
Has to be placed sideways during use which may lead to straining in order to read the result.
9.2 x 3.9 x 1.2 inches; 0.3 lbs
Steel, plastic
Best Value
Milwaukee Voltage Detector with LED
Milwaukee Tool is a leading manufacturer of heavy-duty hand tools, power tools and accessories for professionals worldwide.
Super-bright flashlight located at the tip. Beeps loudly to alert you. Convenient rear push-button design.
Changing the batteries is somewhat tedious.
2 x 8 x 1 inches; 0.04 lbs
Aluminum, plastic
Fluke VoltAlert Voltage Tester
Fluke is a world-class manufacturer, distributor and service provider of premium test and measurement equipment and software.
Re-assuring audible alert function. Easy to use. Durable and reliable. Easy to change batteries.
Tests for presence of voltage but not strength.
9 x 5.5 x 1.3 inches; 3 lbs
Copper, plastic
Greenlee Non-Contact Voltage Detector
Greenlee Textron is on a mission to make the fastest, safest and easiest to use tools on the market..
US-made. Can be used to detect live wires from a tangle. Doesn’t give false positives. Impressively durable. Easy to use.
Its pocket-clip could be tighter.
8.9 x 5.1 x 1 inches; 0.09 lbs
50V– 1000V
Aluminum, plastic
Amprobe PY-1A Voltage Tester
Amprobe, the inventor of the first clamp meter, has continued to build rugged and reliable tools ever since.
Robustly-built from strong materials. Wide voltage range for both AC and DC. Easy to use.
Probes aren’t long enough for some outlets.
8.9 x 5 x 1 inches; 0.11 lbs
160V-480V DC, 120V-480V AC
Neon indicator
Aluminum, plastic

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Watch Our Voltage Tester Review

What is the Best Voltage Tester?

Voltage testers have different inherent features that make them suited to the job they perform. Having gone through our buying guide, you should be better informed about these features and therefore, better equipped to make the right choice of voltage tester.Below is our individual product review section – check out the top notch products we picked out for you!
Our Top Choice
The Klein Tools NCVT-3 Non-Contact Voltage Tester is a lightweight compact tool with a bright flashlight. It detects 12-1000AC volts and is equipped with both visual and audio indicators to interpret voltage strength. If you’d prefer a multipurpose Voltage/Continuity Tester, we recommend the Klein Tools ET200 Electronic Voltage/Continuity Tester.

Klein Tools NCVT-3 Non-Contact Voltage Tester - Available in 2 Variants

There has to be a reason Klein Tools is touted as the brand of choice for professionals in the electrical, construction and industrial trades; is it its vast collection of high quality products or its dedication to doing everything, even the seemingly little things? It’s probably due to its firm belief in the values of integrity, honesty and ethics, its recognition of the fact that people – employees, customers and shareholders alike – are its most valuable assets, or a combination of all these reasons and more. This company was set up by Matthias Klein in 1857 and has been owned and operated by his family up to the fifth generation. Despite its impressive growth through the years, it has remained committed to meeting the needs of professionals and making products of the highest and finest standards.

The Klein Tools NCVT-3 Non-Contact Voltage Tester is designed to be a must-have in every toolbox. It’s a high sensitivity tester able to detect voltage in cables, circuit breakers, cords, wires, switches, light fixtures and outlets as well as doorbells, low voltage lighting, thermostats and irrigation systems without even touching any of them. It will tell you which side of a cable or cord has the hot wire and will alert you of a neutral in close proximity to a hot wire and vice versa; just get it in the immediate environment of the electrical and electromagnetic fields and watch it light up and beep away happily.

This brings us to its indicators; it’s equipped with a simultaneous dual-indicator system which includes visual and audio alerts. The visual indicator is a graph-like lineup of 5 brilliant LEDs that show the strength of the voltage. When it senses low voltage or a magnetic field, two amber lights and one red light come up and more or all of the LEDs light up when high voltage is perceived. The audio indicator alerts you by a series of beeps that increase in frequency as the strength of the voltage increases. What’s more, it can be silenced if you have to work in noiseless conditions.

It has a bright flashlight that can be used with or without the voltage meter, illuminating the work area, enabling you to see exactly what’s happening and what is going where; neat, right?

Here are some more features of this voltage tester:
  • It conserves battery life with an auto power-off feature that turns the tester off after a brief period of inactivity
  • Speaking of batteries: it is powered by two AAA batteries and comes with a set of durable ones to start you off
  • It is water and dust proof as it features a screw-thread battery cap protected by a rubber O-ring
  • It’s a lightweight tool with a compact build and a pocket clip for easy handling and quick access
  • For your safety, it is rated CAT IV 1000V and has a 6.6 foot drop protection<
One more thing – this tool is US-made.
Best Value
The Milwaukee Voltage Detector with LED is a non-contact tester that detects 50-1000V. Its LED illuminates the work space and a lightweight build with pocket clip facilitates ease of handling. If you’re interested in a dual-range detector, we suggest you check out the Milwaukee 2203-20 10-1000V Dual Range Voltage Detector.

Milwaukee Voltage Detector with LED Work Light, Detects 50 – 1000V

Milwaukee is a brand synonymous with first-rate tools that deliver when called upon. It was established in 1924 – only 7 years shy of a century ago – and has since led its industry in the production of tools with great performance and durability. It’s a brand with a strong sense of commitment to the trades and works with a consistent focus on providing its innumerable customers with trade-specific solutions that are as innovative as they are reliable and easy to use. It has an established place as a leader in Lithium-ion technology, with its M-series systems, delivering next-generation technology to increase productivity. It pays attention to the small details, applies the information it gets from on-site studies, and creates a line of innovative tools to answer jobsite challenges.

Milwaukee’s Voltage Detector with an extra-bright LED can be confidently used to work in the dark areas where electrical wiring abounds e.g. boxes, attics etc. The light is located at the tip of the tester and comes on when the tester is powered on. It has a rear-mounted push button with which it can be turned on and off, and features an auto power-off function which triggers after about 3 minutes of inactivity.

It has a green ‘on’ indicator light that turns red when it senses electricity and beeps rapidly as well. When you turn it on, in addition to the green ‘on’ indicator and flashlight, it emits 2 beeps as an indication it’s ready for use. Lest we forget, it can be effectively used to detect voltage ranging from 50V to 1000V.

Some other features of this tester include:
  • CAT IV 1000V safety rating which implies safety for use with all applications including industrial
  • Powered by 2 AAA batteries and comes with a set
  • Durable Milwaukee ABS plastic shell for long-lasting, regular use
  • Lightweight build with a pocket clip for ease of handling and retrieval
Milwaukee’s voltage tester is covered by a lifetime limited warranty.
The Fluke 1AC-II / 1LAC-II VoltAlert is a pocket-sized, non-contact voltage tester with a red-glowing tip and beeping indicators as voltage alerts. It detects voltage from 20V to 90V and continuously self-tests. If you’re in the market for an AC voltage detector with LED flashlight, you’ll do well with the Fluke’s LVD2\/CT Volt Light with Counter Top Display. It detects 90 to 600V AC voltage.

Fluke VoltAlert Voltage Detector- Available in 5 Capacity Sizes

Fluke is a wholly-owned subsidiary of Fortive and a reputable manufacturer of industrial and electronic test equipment. It was founded in 1948 and, over the years, has added a diverse range of products to its portfolio, most of which have gone on to become award-winning solutions to the problems they sought to answer. Some of its accolades include the AHR Expo Innovation Award in the Tools & Instruments category in 2013, NECA Showstopper Award, Engineers’ Choice Awards in 2012 and lots more. This company has established itself as the number one or two position in every market it competes in and its tools have come to be synonymous with convenience, ruggedness and rigid standards of quality.

The Fluke 1AC-II / 1LAC-II VoltAlert is a non-contact voltage tester that has been designed with a lightweight, compact build, thus making it a convenient tool that is easily carried during used. It also has a pocket clip that compliments its pocket-sized build and so can be secured to your pocket and easily retrieved during use. It has the capacity to detect voltage within the range of 20V to 90V when you touch its tip to an outlet, terminal strip or supply cord and alerts you to the presence of voltage with a red glowing tip and beeps. This dual-indicator system is a useful feature, especially if you have to use it in a bright or sunlit area where the red glow might be easily missed or in areas where noise is to be kept to the minimum.

Other features of this Fluke tester include:
  • An on/off button for power conservation
  • The audible beeping alert can be turned off – a plus when you’re working in noiseless zones
  • A durable and sturdy plastic build
  • It’s powered by 2 AAA batteries and comes with a set for your convenience
  • For your safety, it has the 1000 V, CAT IV safety rating
This tester is backed by a 2-year warranty.
The Greenlee Non-Contact Voltage Detector features a continual self-test function, assessing the tester’s complete functionality. It detects voltage in the range of 50V-1000V and alerts you to the presence of voltage with bright LEDs and audible alarm. For an adjustable voltage tester with a 5 to 1000 volt range check out the Greenlee GT-16 Adjustable Non-Contact Voltage Detector.

Greenlee Non-Contact Voltage Tester With Automatic Self-Test

For over a century and a half, Greenlee, a Textron company, has been a purveyor of prime quality tools to the woodworking industry. More recently, it has also supplied tools of outstanding quality to the electrical industry. A peek into its history grants insight into the company’s longevity. Ralph and Robert Greenlee, twin sons of Edmund Greenlee, inherited some of their father’s inventiveness and put it to good use. They became proficient coopers (barrel makers – their father’s trade) by age 20, moved their business from Crawford County to Chicago in 1862, and became partners with William Brooks (whose daughters they both married) in 1866. This enabled them to pursue their primary interest – the development of new products. Today, that commitment to development has seen Greenlee rise to the top.

The Greenlee Non-Contact Voltage Detector is a sleek-looking, US-made tool. It features a continuous self-test function that, when turned on, causes an LED to flash every 2 seconds, indicating it’s working well. In a low-battery scenario, the LED will stay on instead of flashing and when the tester is faulty or not working, the LED will go off to indicate the tester should not be used. This feature covers battery capacity, battery integrity, the antenna and the complete circuitry of the tester – it’s one of a kind so far.

This tester incorporates an audible and a visual alarm system; when the voltage is detected, the LEDs (located at its tip) light up and the tester beeps. There is a silent mode option for working in quiet areas and its LEDs are bright enough to efficiently alert you to the presence of voltage.

Here are a few other features of this tester:
  • Low battery indicator to alert you to the amount of juice left, so you’ll have replacements at hand
  • Automatically turns itself off after 5 minutes of inactivity, saving battery power
  • Includes 2 1.5V AAA batteries to get you off to a good start
  • CAT IV, 1000V safety certification for your voltage testing safety
Greenlee is confident in its tester and has it covered with a lifetime limited warranty.
The Amprobe PY-1A Voltage Tester is an automatic AC/DC tester with neon indicator lights. It detects AC voltage ranging from 120V-480V and DC from 160V-480V. Its in-built lead holder keeps the testing contacts in the right positions to fit standard US/Canadian outlets, allowing one-handed operation. For a professional’s voltage tester, take a look at Amprobe’s TIC 300 PRO High Voltage Detector.

Amprobe PY-1A Voltage Tester With In-Built Test Leads Holder

Amprobe was founded in 1948 as Pyramid Instrument Company. In 1950 (September, to be precise), one of its first products, the “Amprobe” inductive meter, won the company its first patent. Before long, Amprobe was so synonymous with clamp meters that the company made a formal name change to become Amprobe Instrument Corporation in 1960. Today, it remains committed to innovation, creating and distributing tools that have come to be trusted by professionals, home owners and D-I-Yers the world over. All of its tools undergo rigorous testing and are certified for user safety before they are distributed.

The Amprobe PY-1A Voltage Tester is a pocket-sized tester with a sturdy construction designed to deliver years of hassle-free service. Its test probes can be conveniently snapped onto the back of the unit for easy storage, use and one-handed receptacle testing, with the probe holders spaced to fit US/Canadian outlets and provide easy handling. It’s designed for use on both energized and non-energized circuits and includes a test current that is up to 3.5mA.

It has 4 bright neon lights to indicate the presence of both AC and DC voltage; for AC voltage it detects 120, 240, 277 and 480 volts while for DC voltage it detects 160, 330, 380 and 480 volts. It detects voltage from circuit breakers, receptacles, cords, cables, and electrical appliances.

Its other features include:
  • CAT III 600V safety rating for your protection
  • No buttons or setup necessary so it’s quite easy to use
  • 2 AAA batteries included for your convenience

Amprobe has other voltage testers in its collection:
  • Amprobe VP-440 Non-Contact Volt Detector: Used to detect voltage on cables and electrical wiring. It measures from 50 to 1000V
  • Amprobe PK-110: Electrical Test Kit Voltage Probe: This checks for voltage in switches and light fixtures. It can measure resistance and capacitance
  • Amprobe LT-10 Light Tester: This is a non-contact voltage tester that is used to test lamps and fluorescents before installation
  • Amprobe PM-55A Pocket Multimeter Non-Contact Voltage Detector: This voltage tester senses alternating current without making contact. It has a meter that provides correct reading for sinusoidal voltage waveforms
  • Amprobe BAT-200 Battery Tester: This equipment tests rechargeable and ordinary batteries; it has an easy to read display

How Do I Choose the Best Voltage Tester?

In today’s world, there’s very little you can’t do for yourself. Do-it-yourselfers are having a field day and for the professionals, life couldn’t be better, with all the tools and equipment at their disposal to make their work easier and stress free. In the electrical industry, a voltage tester is one such tool,designed for better safety and more productive work hours. The voltage tester functions in a similar way to a multimeter, but unlike multimeters, it can test for the presence of voltage on individual test points and, therefore, has more versatility.

A voltage tester is portable, handy, and essential forelectrical works. It’s used to test for the presence or absence of voltage or current in a piece of equipment under scrutiny. It comes in two forms – the contact and non-contact voltage tester. Most modern voltage testers are non-contact, as this offers better safety and accuracy, measuring the magnetic field created by a current-carrying conductor to confirm the presence of voltage. The voltage tester consists basically of an electric lamp, acting as the indicator light, connected to one or two insulated wire leads, and often comes in a pen form.

It’s an indispensable tool for the electrician as it sometimes separates life from death through electrocution. It can also be used by do-it-yourselfers in and around the house for carrying out some minor electrical repairs like tracing and changing faulty electrical wiring, sockets or bulbs. Because of its portable nature, it can be carried about in the pocket but for better storage, it’s advisable to put it in a tool box or gadget bag. Voltage testers are battery-operated, usually by one or two AAA batteries or the tiny watch batteries.

Having seen some reasons why you need this safety device, let’s now take a closer look at some of the features you should keep in mind or note when shopping. These features include design, functionality, indicator system, range, type, extra features and cost.
Most of the differences between voltage testers are likely to be aesthetics like the shape and design or it might be in the number of indicators present. These slight variations also mean there’s likely to be slight variations in prices of such products, from brand to brand.

Voltage testers are generally affordable and can easily be purchased without causing a dent in your pocket. This doesn’t mean there aren’t high-end voltage testers but there are limits to how much one should pay.

The voltage testers we featured in this review are all reliable and from trusted brands. They range in price from about $7 to $30 and will certainly give you value. Although we came across cheap voltage testers, they looked flimsy so we decided to feature only trusted brands with top notch products for safety and reliability.
To get the best performance out of your voltage tester, there are some factors or features you need to take note of when making your choice.
These factors are:
  • Type
  • Design
  • Functionality
  • Range
  • Indicator system
  • Extra features
Let’s take a look at these features in more detail.
Construction and Design
There are two main types of voltage testers – the contact voltage tester and non-contact voltage tester. The main difference between the two types is in the tip. The contact voltage tester has a metal tip which needs to make contact with the metal part of the object under investigation to determine the presence or absence of voltage or current while the non-contact voltage tester has an insulated tip and unlike the contact voltage tester, doesn’t need to touch any metal component for it to function.

The non-contact voltage tester makes use of the magnetic field created by a current-carrying conductor or object to determine the presence of current or voltage. This means you absolutely don’t need to dismantle whatever it is you’re working on in other to test for voltage, and also you can use the non-contact voltage tester to locate faulty wiring, even if it’s in a wall or (with some models) underwater. If it’s a socket you’re working on, all you need to do is stick the tip of the tester into the socket and see if you get a reading. It’s highly recommended you go for the non-contact voltage tester as they’re safer, more versatile and easier to use.

Almost all voltage testers function by the press of a button to turn the tool on. Once the tool is powered, which is often indicated by the glow of an indicator light, it’s ready to start detecting. You have to press the tip against the surface that you’re working on to try to determine if there’s voltage present or not. This feature helps to conserve the battery life and also to increase the durability of the voltage tester itself. It wouldn’t help to have a tool that is perpetually powered on or maybe you’d have to get the batteries out each time you’re through with it.

Voltage testers have different operation ranges. The range here refers to the amount of voltage that it can measure. An average voltage tester can easily measure between 90 volts and about 1000 volts which is quite a reasonable range covering most household and professional uses. A few others, like the NCVT-3 Non-Contact Voltage Tester featured in our product review section can detect voltage as low as 12 volts, thus having a wider user range.

All voltage testers are battery operated. Some of them use small watch batteries while others are designed to use AAA-size batteries. You should note that the type of battery will definitely affect the weight of the tester so you should bear that in mind when making your choice.
Performance and Ease of Use
Voltage testers are simple, handy tools that are quite easy and straightforward to use. They do not require too much maintenance. Just ensure the battery doesn’t stay too long past its prime, especially if it’s an AAA battery, to avoid the battery leaking and damaging the tool.

A voltage tester is designed to be compact and lightweight so it can easily fit in your pocket. They’re usually made from thick plastics which makes them highly durable and some of them are even drop-proof.The pen shape makes them super easy to use and the insulated tip usually comes in sizes to fits most sockets.

The electric lamp component of the voltage tester serves as the indicator. The indicator light comes on once voltage is detected and some voltage testers have the added advantage of different light intensities indicating the strength of the voltage detected. The indicator light could come on an LCD or LED screen panel and the NCVT-3 Non-Contact Voltage Tester features a special LED bar graph indicator that lights up in proportion to the voltage detected.

The tester indicator may also be in a buzzer form that gives out a buzzing or alarm sound when it senses voltage. Most voltage testers combine light signal with sound for better performance so you can always have a backup even if one indicator fails to work.

Voltage testers usually come equipped with a tight clip at the end for safely and firmly attaching it to your pocket or a slot in your gadget bag to ensure you don’t lose it easily. Some of them have flashlights that work independently of the voltage tester and can come in handy in emergency situations or dark areas when you need a portable flashlight.

Most voltage testers feature a battery checking system controlled by a microprocessor to ensure the battery and equipment are in perfect working condition.Some brands incorporate a battery life indicator on the LED screen so you’re kept informed about the health of the battery.

Get the Best Voltage Tester of 2023!

We’re convinced you must have seen a voltage tester that fits your requirements, so go ahead and place your order now. If you haven’t, we suggest you use the navigation links provided to check out other best voltage testers from the trusted brands featured.

Our Top Choice
Klein Tools NCVT-3 Voltage Tester
Best Value
Milwaukee Voltage Detector with LED
Fluke VoltAlert Voltage Tester
Greenlee Non-Contact Voltage Detector
Amprobe PY-1A Voltage Tester