Tools

Best Non-Contact Voltage Testers TOP8

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Why Do We Need Non-Contact Voltage Tester?

The non-contact voltage tester is the fastest and easiest way to safely check the voltage in cables, sockets, switches, or old lamps when they mysteriously stop working. It is a useful tool that almost every electrician carries. This device should be in the inventory of anyone who performs even the most straightforward electrical work.

Voltage testers show whether the electricity line is voltage-free or live. You need to check this before starting any work on electrical installations, whether you can safely control the circuit or whether the fuse is off.

The voltage tester is must have in any house or on a working site since an electric power measuring device is of great value not only for electricians but also for every non-electrician who comes into contact with technical tools. Accurate voltage measurement, whether from a wall outlet, from a lamp, in a car, or many other places at home, can really save lives.

voltage testing

Things to Watch Out

A contact-free energy sensor is a practical selection if you’re seeking for a chain break or faulty fuses. This class of energy checkers is suitable for testing current through an insulating layer. When purchasing an energy inspector, three crucial issues must be well-thought-out:

What are the environmental conditions?

First of all, you need to determine where the voltage tester will be used. The definition of this factor will help you choose precisely the voltage meter that will meet all your requirements. To begin with, you must determine whether your device will be used at home for minor repairs, in production, or in construction where there are increased risks of damage to the equipment. After determining this factor, your search will narrow down to a few devices in our selection. For example, if you want to use a current meter as a full-fledged tool in construction. Hence the resistance to both dirt and water, impact resistance, ease of storage and use, as well as an abundant supply of energy are essential functions.

What voltage is measured (high or low current)?

The operating voltage is also very different depending on the version of the device. Some devices already respond to a voltage of 12 V, many to a voltage of 50 V, and others only to a voltage of 90 to 200 V.

What type of voltage should be measured?

The world’s two most common standards of voltage and frequency are similar around the globe. One of them, along with plugs A and B, is the 60-hertz American standard of 100-127 volts. The other one is European, it’s 50-hertz 220-240 volts. When buying a tester, you must know the range will be tested to avoid receiving inaccurate information from the meter. It will also assist you in ensuring that your device recognizes your network’s scope to detect a voltage shortage.

Technical Terms

For starters, let’s define the first terms that will be mentioned frequently. Since all testers from this selection detect voltage, we define this term in a straightforward way.

To understand what is the electric voltage, it is better to compare it with the pressure of water in the pipes (the pressure without which electricity will not flow, when water does not flow in the interwoven tap). However, it has its force, the same applies to voltage, even when the current does not flow, the system has its electrical energy. If a low voltage is supplied to the system, there are almost no current flows, and if the voltage is too high, it may cause damage to the electrical device (since too high a pressure causes cracks in the water pipes). The current power is measured in volts.

Types of Contactless Energy Testers

All contactless voltage testers are pencil-shaped and help to define the existence of electrical energy in the network at a time when there is no direct access, for example, when a wire breaks in the wall. Nevertheless, voltage textures differ in their characteristics, the number of functions, and the variety of frequencies caught. You can test your voltage tester on the car battery at first, but be careful when doing this! Read how to jump start a car if you need more information according operations with car batteries.

When choosing an energy indicator, the leading property that should be reviewed is the assortment of the absorbance. Since the detector you purchased may be inadequate for dealing with low-frequency devices or vice versa, the voltage frequency in the network will be too high for the detector to detect it.

voltage tester assembly (scheme)
Photo by Amazon.com

Comparison Table


Editor’s ChoiceSolid ChoiceBest Value

Klein Tools NCVT-3, AC and DC Dual TestingSperry Instruments VD6505, Voltage TesterTacklife VT02, Dual Range Voltage Tester
Measurement range12 to 1000V12 to 1000V12 or 48 to 1000V 
Flash lightYesNoYes
ProtectionIP67 standard250 lb. crushIP67 standard + throw protection

Check priceCheck priceCheck price

Products Review

1. Klein Tools NCVT-2, Dual Range Pen Current Sensor

Klein Tools NCVT-2, Dual Range Pen Current Sensor

Description

To detect current in wire chains, batteries, electrical systems, ceiling fans, devices, ports, and cables fast and conveniently, the Klein Tools NCVT-2 Inspector uses non-contact energy analysis technology. The voltage tester offers precise measurements for use at the housing estate, office, and residence. This examiner has high-quality electronics, and strong polycarbonate polymer resins for a modern design that is thorough, safe and long-lasting.

Packaging

  • 1x NCVT-2 Pen Voltage Indicator
  • 2x AAA batteries
  • 1x product warranty

Performance and technical issues

  • Measurement range: 12 to 1000V AC
  • Auto power-off: Yes
  • Power source: 2x AAA batteries
  • Protection: IP67 standard

Recommendations

It is an excellent solution for checking electricity strength in sockets, cables, switches, holders. Also, useful when searching for live wires embedded in walls, trays, pipes, panels, etc.

Pros Cons
• Easy to use
• Pocket holder
• Broad range of detection
• No integrated spotlight
• No vibration indication

2. Klein Tools NCVT-3, AC and DC Dual Analysis

Klein Tools NCVT-3, AC and DC Dual Analysis

Packaging

  • 1x NCVT-3 Pen Power Sensor
  • 2x AAA batteries
  • 1x product warranty

Description

The NCVT-3 is a vitality analyzer with a coordinates highlight that’s non-contact. AC and DC streams are recognized by the Southwire Advanced NCVT indicator within one second. The presence and extent of the energy in the cable can be measured with it, under-voltage objects can be observed, wire breaks can be found and barrier damage points. The unit signs appear within the shape of a light sign and a sound flag for permitting you to rapidly and unmistakably decide the vitality participation. The NCVT-3 is extremely adequate for any working conditions. The hung battery case with O-ring provides affirmation against liquid.

Performance and technical issues

  • Measurement range: 12 to 1000V AC
  • Auto power-off: Yes
  • Power source: 2x AAA batteries
  • Protection: IP67 standard

Recommendations

A light LED torch that can be controlled independently from the energy examiner is the most useful. So this tool will be very useful when used in poorly lit basements or in situations where the lighting does not work. Moreover, this small feature is handy. As a sensitive electronic device, this device can also withstand a drop of up to two meters, which is not bad.

Pros Cons
•  Pocket holder
• Broad range of detection
• Measurement scale
• Inbuilt flashlight
• No integrated flashlight
• No vibration indication

3. Tacklife VT02, Dual Range Energy Analyzer

Tacklife VT02, Dual Range Energy Analyzer

Packaging

  • 1x Tacklife VT02
  • 2x AAA batteries
  • 1 x English Manual
  • 24 months Service

Description

This contact-free gauge is made in the frame of a pen. Much obliged to this, utilizing the device is greatly straightforward. Touch the terminal box, switch, or wire to do this, and if there is a current, the tip turns red and sounds loud. In operation, it is quite unpretentious and straightforward, so if, for example, you detect a phase and a red light is triggered and a signal sounds, then there is energy. Moreover, a comfortable and reliable indicator so that now you don’t have to bare the wires at all. Just attach the indicator to the covering layer.

It is powered by 2 AAA batteries. A low battery sign is included. Thanks to the LED backlight, you can work even in poor lighting conditions. This tester provides you with the ability to change the sensitivity to perform specific tasks. In addition, this indicator is equipped with auto-shutdown function if no measurements are made within three minutes. This feature will help preserve battery power and prolong the sample’s life, as well as save you of the constant battery replacement expenses.

Performance and technical issues

  • Measurement range: 12 to 1000V AC or 48-1000V AC
  • Auto power-off: Yes
  • Power source: 2x AAA batteries
  • Protection: IP67 standard + throw protection

Recommendations

It is an accessible and trustworthy assistant to a licensed electrician that allows detecting electrical energy without exposing the ceiling and direct contact. Useful for determining the location of damage to power cables of household devices or power tools. The tool defines the area of the cable damage where the energy has gone, and you can urgently repair it, without exhausting the search for the point of destruction.

Pros Cons
• Pocket hook
• LED measurement scale
• Inbuilt spotlight
• Null & live cable measuring
• Battery low sign
• No rechargeable battery

4. Sperry Instruments VD6505

Sperry Instruments VD6505

Packaging

  • 1x Sperry Instruments tool

Description

The Sperry Instruments VD6505, designed to meet the standards expected by skilled electricians, enables you to change sensitivity in multi-wire applications where accuracy and protection are important.

The instrument has an alteration of sensitivity-making it conceivable to distinguish live cables at different separations. The affectability controller is combined with a switch permitting the system to turn off automatically. The hardware within the on state signals its operability. This gadget recognizes the current introduction by visit flashes of the LED and irregular signals. The cover is made from durable plastic. Ran by one AAA arrange battery, it is embedded into the raise of the instrument.

Performance and technical issues

  • Measurement range: 12 to 1000V AC
  • Auto power-off: No
  • Power source: 1x AAA battery
  • Protection: 250 lb. crush rating

Recommendations

This device is accurate for those who is in technical work and in the electrical network themselves. Practicing this inspector, you can always quickly determine the presence of energy in the system, without straight access to the wires. This indicator will be an excellent assistant and will protect you during the next work with electricity.

Pros Cons
• Pocket hook
• Acoustic and optical sign
• Adjustable sensitivity
• Compact design
• Rechargeable battery
• No inbuilt flashlight
• No water and dirt defense

5. Milwaukee 2202-20 Power Detector

Milwaukee 2202-20 Power Detector

Packaging

  • 1x Voltage Detector
  • 2x AAA batteries
  • 1 x English Manual

Description

The energy inspector measures the energy on cables and circuits, as well as on outlets, without touching these components. It is planned to supply the user with the highest possible protection. This tester depicts two devices in one thanks to the integrated bright LED light. The enduring tip makes checking outlets easy. The model 2202-20 additionally is equipped with an indicator. This Milwaukee non-contact energy inspector is powered by two AAA batteries.

Performance and technical issues

  • Measurement range: 12 to 1000V AC
  • Auto power-off: No
  • Power source: 2x AAA battery
  • Protection: No

Recommendations

The lightweight gadget is outlined to fit perfectly into the hand and to cope perfectly with the harsh conditions of daily work at the same time. Among electricians, this non-contact electrical energy analyzer is an indispensable tool. Moreover, it is helpful among small home repairs either.

Pros Cons
• Highly durable
• Easy to handle
• White and red light
• No protection
• No battery indicator
• No flashlight

6. Southwire Advanced NCVT

Southwire Advanced NCVT

Packaging

  • 1x Southwire Advanced NCVT
  • 2x AAA batteries

Description

This device permits you not to hint the uncovered cable or another source specifically, decreasing the plausibility of electrical shock.

The non-contact power pointer has two operating modes – automatic, and manual sensitivity settings can measure current from 12 to 1000 Volts. In manual tuning mode, you can independently enable the method of gauging the minimum electrical energy level of 12 V, by pressing just one button.

Performance and technical issues

  • Measurement range: 12 to 1000V AC and 100-1000V AC
  • Auto power-off: No
  • Power source: 2x AAA battery
  • Protection: IP67 standard

Recommendations

The non-contact current marker is accommodating for repairmen, builders, and other clients who require a secure, quick, and straightforward checker to function with power. It can be practiced at home, in the office, in production, during the repair and installation of electrical networks, household appliances, to search for hidden wiring.

Pros Cons
• Silent mode
• Low battery self-test
• Flashlight
• No battery indicator
• Pocket hook

7. Klein Tools NCVT-4IR

Klein Tools NCVT-4IR

Packaging

  • 1x NCVT-4IR Power Detector
  • 2x AAA batteries
  • 1 x English Manual

Description

Designed for AC power non-contact monitoring, this current meter will be an outstanding assistant for both skilled electricians and individuals without in-depth technical knowledge. The built-in show appears voltage from 12 to 1000 V AC with synchronous optical and acoustic effects to pull in your consideration.

This meter is prepared with a light electric lamp to light up the working zone. The detector of energy transmits the next recurrence sound flag, the greater the current, or the closer the sensor to the source of power. This gadget has an IR warm sensor that can distinguish and appear the surface temperature in seconds in Fahrenheit and Celsius on display.

Performance and technical issues

  • Measurement range: 12 to 1000V AC
  • Auto power-off: Yes
  • Power source: 2x AAA battery
  • Protection: IP67 standard

Recommendations

This is a flawless solution for those who work in challenging conditions and require proficient hardware that will work in any circumstance. This tiny device with a take clip can be put away nearly and continuously at hand. Besides, this device is ensured against tidy and liquid concurring to the IP67 standard.

Pros Cons
• Pocket hook
• IR thermometer in Celsius and Fahrenheit
• Laser indicator
• Backlit LCD
• No rechargeable battery
• No throw protection

8. Sperry Instruments STK001

Sperry Instruments STK001

Packaging

  • 1x Voltage Tester (VD6504)
  • 1x Tester (GFI6302)
  • 1x 1 AAA battery

Description

The analyzer for sockets is a solid measuring gadget that grants you to quickly find blunders when connecting, exam the network and conduct a instant assessment of the quality of the system. This is often a small savvy gadget that will help you decide the closeness of a breakdown within the electronic arrange in a matter of seconds, incorrect phase connection, plug it into a power outlet. The device is made according to the principle of smart technologies when you use it, you immediately get the result, without complex calculations and third-party tools. It helps to quickly and reliably identify problems with the connection and functioning of any electrical hardware.

Performance and technical issues

  • Measurement range: 50-1000V  AC
  • Auto power-off: No
  • Power source: 1x AAA battery
  • Protection: 10 ft drop & 250 lb crush

Recommendations

It is a flexible sensitivity exact and easy-to-use voltage analyzer. For comfortable work, it has a bright LED indicator. This instrument is incredible at domestic for minor repairs. It’s also a fantastic tester to help you maintain your home’s technical condition.

Pros Cons
• 360 visual indicators
• 2 piece kit
• 7 wiring conditions detection
• No rechargeable battery
• No pocket hook

Our Best Voltage Tester

Finding a voltage analyzer should not take too much time and nerves. However, you wish to know in advance the desired measurement category, the desired current type, and the best extreme voltage that must be measured. As the winner in the category of the best voltage meter, we chose then Tacklife VT02. This tool combines all the best qualities that a convenient and reliable voltage meter should have. A large number of built-in functions, a convenient and secure design make this device the best in our collection. The best laser measurement tools are described in this article.

FAQ

How does the voltage measure?

With contactless detectors, you should get near to the electrical energy source. Then, you must trace the two poles carrying voltage, between which you need to check if the cable is live.

How does a contact-free current indicator work?

The non-contact power tester works with the help of electrical charges. The alternating power of the conductor affects the charge distribution at the end of the current detector, which, in turn, can measure this.

What does the IP67 protection standard mean?

IP67 protection class guarantees resistance to the immersion of the device in water. Such an event can occur even during its regular use by accident. It does not mean, however, that the equipment can be permanently used underwater or washed under pressure. The IP67 class allows immersing small devices to a depth of up to 1 m, but not longer than half an hour.

Conclusion — Buyer’s Guide

A non-contact voltage tester is a convenient choice, for example, if you want to find a cable break or faulty fuses. This type of voltage tester is suitable for checking voltage through an insulating layer.

However, a non-contact energy inspector also has a drawback. It can only accept alternating voltage (and not constant voltage) because this type of item only checks the magnetic field and operates capacitively. From a practical point of view, this means that you cannot verify the charging cable for the smartphone, for example – it works in only one direction. In everyday life, this option, like a two-pole voltage tester, can be entirely used for various areas.