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Klein Tools NCVT-2 Voltage Tester, Non-Contact Dual Range Voltage Tester Pen for Standard and Low Voltage, Outlet Tester

4.6 4.6 out of 5 stars 5,781 ratings

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Tester
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Purchase options and add-ons

Brand Klein Tools
Power Source 12-1000v
Style Dual Range
Color No Color
Item Weight 0.8 Ounces

About this item

  • Voltage Tester automatically detects and indicates low voltage (12-48V AC) and standard voltage (48-1000V AC) allowing broad application
  • Non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires
  • Non-contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems
  • High intensity, bright green LED indicates the tester is operational and aids in illuminating the workspace
  • Dual Range testing, select 12-1000V AC or 48-1000V AC
See more product details

Customer ratings by feature

Quality of material
4.8 4.8
Easy to use
4.3 4.3
Accuracy
4.3 4.3
Value for money
4.2 4.2

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From the manufacturer

Klein Tool  Dual Voltage Tester, Non Contact Tester for High and Low Voltage with 3m Drop Protection

About Klein Tools

As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.

Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day Since 1857.

Dual Range Tester, Non Contact Tester for Standard and Low Voltage with 3-m Drop Protection

This Dual-Range Non-Contact Voltage Tester automatically detects low voltage and standard voltage. A bright green LED will tell you the tester is working and also functions as a worklight. The light flashes red and two distinct warning tones sound when either low or standard voltage is detected.

  • Automatically detects and indicates low voltage (12-48V AC) and standard voltage (48-1000V AC) allowing broad application
  • Non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires
  • Non-contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems
  • High intensity, bright green LED indicates the tester is operational and aids in illuminating the workspace
  • Dual Range testing, select 12-1000V AC or 48-1000V AC
  • Auto power-off feature conserves and extends battery life
  • CAT IV 1000 Volt rating provides expanded operation and protection
  • Lightweight, durable polycarbonate plastic resin construction; convenient pocket clip

Klein Tools NCVT 2, Automatically detects and indicates low voltage

Non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures

Klein Toosl, ncvt-2

Klein Tools, Klein ncvt2

Provides non-contact detection of AC voltage.

Detects 12 to 1000V AC with simultaneous visual and audible voltage indicators.

Bright flashlight illuminates work area and may be used independent of voltage detection function.

Visual LED bar graph indicates the presence of voltage - the higher the voltage sensed, or the closer to the voltage source, the more LEDs light up.

Klein Tools
Customer Reviews
4.6 out of 5 stars
1,191
4.6 out of 5 stars
1,191
4.7 out of 5 stars
4,412
4.8 out of 5 stars
2,902
Price $42.62 $29.97 $39.00 $9.97
Mfg. No. ET250 ET60 NCVT-4IR RT110
Description AC/DC Voltage/Continuity Tester Electronic AC/DC Voltage Tester Non-Contact Voltage Tester w/Infrared Thermometer Receptacle Tester
Klein Tools
Customer Reviews
4.8 out of 5 stars
8,578
Price $12.97
Mfg. No. RT210 NCVT-1
Description GFCI Receptacle Tester Non-Contact Voltage Tester

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Product information

Technical Details

Additional Information

Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Klein Tools NCVT-2 Voltage Tester, Non-Contact Dual Range Voltage Tester Pen for Standard and Low Voltage, Outlet Tester

Klein Tools NCVT-2 Voltage Tester, Non-Contact Dual Range Voltage Tester Pen for Standard and Low Voltage, Outlet Tester


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Product Description

Product Description

Klein Tools Dual-Range Non-Contact Voltage Tester automatically detects low voltage and standard voltage. A bright green LED will tell you the tester is working and also functions as a work light. The light flashes red and two distinct warning tones sound when either low or standard voltage is detected. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

From the Manufacturer

Klein tools electrical testers are loaded with the latest innovative time saving features. They are designed by electrcians for electricians. Automatically detects and indicates low voltage (12-48V AC) and standard voltage (48-1000V AC) allowing broad application. Designed for non-contact detection of standard voltage in cables, cords, circuit breakers, lighting fixtures, switches, outlets and wires. Also excellent for non-contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems. Our high intensity, bright green LED indicates the tester is operational and aids in illuminating the workspace.

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Price-11% $36.01
Typical:$40.59
$19.97-7% $26.49
Typical:$28.50
$39.98-24% $19.97
List:$26.32
-22% $27.97
List:$35.76
Delivery
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Get it as soon as Friday, May 17
Customer Ratings
Easy to use
4.3
4.5
5.0
4.8
4.3
4.7
Accuracy
4.3
4.3
5.0
4.8
4.1
4.6
Value for money
4.2
3.9
4.7
4.0
4.4
Easy to read
4.5
5.0
4.8
4.6
4.6
Sold By
Aserson
Amazon.com
MP Media Sales LLC
Amazon.com
Amazon.com
Amazon.com
power source
12-1000v
Battery Powered
Hand powered
Battery Powered
Battery Powered
style
Dual Range
Waterproof NCVT
with Laser Pointer
Outlet Tester Kit
NCVT Pen
Volt Tester
weight
0.8 ounces
43 grams
0.62 pounds
0.05 pounds
0.05 pounds

Important information

Safety Information

Read, understand, and follow all warnings, cautions, safety information, and instructions in the manual before operating or servicing this tester. Failure to follow instructions could result in death or serious injury.Never assume neutral or ground wires are de-energized. Neutrals in multi-wire branch circuits may be energized when disconnected and must be retested before handling.

Bulb Voltage

0 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
5,781 global ratings

Customers say

Customers like the performance, safety, and ease of use of the electric circuit testing device. They mention that it works well, is functional, and is a very useful tool. Some complain about the noise, saying that it beeps when they are 2 feet or further from any electric. Opinions are mixed on quality, sensitivity, and ability to detect voltage.

AI-generated from the text of customer reviews

707 customers mention625 positive82 negative

Customers like the performance of the tool. They mention it works well, is functional, and is a very useful tool. Some say it's a good unit and a great device for indoor projects.

"...Anyway, the Klein tester is well made and works great, just like every other Klein tool I own does." Read more

"...Well built and does he job. This is worth the extra few dollars compared to the cheap versions of non contact detectors." Read more

"...voltmeters and amp clamps are required, this will be very useful to check for voltage before working on any circuit." Read more

"...It works very well and I wouldn't hesitate to purchase another.Edit(11Mar2018) I no longer carry this...." Read more

235 customers mention169 positive66 negative

Customers find the tool very simple to use and accurate. They say it makes it much easier and safer to test and wire. Customers also say the instructions manual is very well written and the pocket clip is sturdy. They mention it's convenient than a test light or voltmeter and makes it super easy to tell Live from Neutral.

"...turned it on (batteries included), and found that it is easy to use and understand for my purpose...." Read more

"...Its bright color makes it easy to spot. It is UL listed and very simple to use. it has no weird bumps or ridges...." Read more

"...I would have waited another week for it had I known.2. NO MANUAL. I had to find it online and print it out...." Read more

"...It lets out a clear tone and lights up whenever you touch it to a hot line. This here voltage tester is now a permanent resident in my toolbox!" Read more

95 customers mention95 positive0 negative

Customers appreciate the value of the tools. They say it's a great investment for peace of mind, and it works great.

"...Well built and does he job. This is worth the extra few dollars compared to the cheap versions of non contact detectors." Read more

"...For the reasonable price and all it's features (especially it's CAT IV..." Read more

"...However, what makes this one worth the extra money is like other Klein tools it stand to be tossed into a work bag and doesn't need to be treated..." Read more

"...it to change a light switch in my house & it worked great & saved me lots of money . I had no need to call an expensive electrician...." Read more

64 customers mention59 positive5 negative

Customers like the safety of the tool. They mention that it eliminates guess work and improves safety. They say it's a great safety procedure for novices, and it ensures safety when working with electricity. They also say it can be used for safety checks on the skin of a travel trailer. Customers also say that it makes working with electrical circuits safer and a good investment for safety.

"This is a great safety tool. I installed a ceiling fan and a thermostat in the same day so I was able to use he dual functionality...." Read more

"...this device is very easy to setup and understand and it will help keep you safe...." Read more

"...Great safety procedure for novices that should call an electrician. lol" Read more

"This is an essential safety tool to make extra sure there are no hot wires in junction boxes you are working on...." Read more

308 customers mention210 positive98 negative

Customers have mixed opinions about the quality of the tool. Some find it high quality, well built, and reliable, while others say it's extremely poor and gives false negatives at times.

"...(batteries included), and found that it is easy to use and understand for my purpose...." Read more

"...Anyway, the Klein tester is well made and works great, just like every other Klein tool I own does." Read more

"...Last is the is the button. It feels sloppy. The issue is the lack of touch feed back. Maybe this wasn't an issue a few years ago...." Read more

"...Well built and does he job. This is worth the extra few dollars compared to the cheap versions of non contact detectors." Read more

99 customers mention68 positive31 negative

Customers have mixed opinions about the ability to detect voltage. Some say it does a good job of detecting voltage to a given circuit, while others say it can't discriminate between low and high voltage wires.

"...Its bright color makes it easy to spot. It is UL listed and very simple to use. it has no weird bumps or ridges...." Read more

"...On low voltage sensitivity, it can detect 24VAC transformer voltage on my doorbell through the wire...." Read more

"...On some cable (like thick microwave oven wire) shows voltage on one side but not the other...." Read more

"...The first is that there is an indicator LED to let you know when this product is working...." Read more

96 customers mention55 positive41 negative

Customers are mixed about the sensitivity of the tool. Some mention that it has 2 sensitivity levels, very sensitive, and typical of similar tools. However, others say that it can be a bit oversensitive.

"Low voltage for Christmas lights and auto. It’s a Klein!" Read more

"...It is not as sensitive as previous non contact testers I have owned. For this one I had to very close to the wire casings to get a read...." Read more

"...Much to my surprise, the thing works really well! It has 2 sensitivity levels...." Read more

"...Sensitivity is typical of similar tools in that it senses the electromagnetic field generated by alternating current being transmitted through wiring..." Read more

67 customers mention6 positive61 negative

Customers are dissatisfied with the noise produced by the electric circuit testing device. They mention that it often beeps when they are 2 feet or further from any electric source, and in high voltage mode, it only beeping at high voltage. Some customers also say that the tool does flash and beeper slightly when they get close to some items. However, some customers report that the product is defective and produces random lights and beers when the power button is pressed.

"...The only complaint I have is once or twice this thing will chirp a little bit on a switched off box...." Read more

"...The only annoying thing is that it will often give errant beeps - it seems like bringing it near any outlet, even one with no electricity flowing..." Read more

"...The darn kept beeping when I put the tester to my bathrom light...." Read more

"...In high voltage mode, it only beeps at high voltage. Understanding that makes using the tester much easier." Read more

Not as skookum as i hoped.
4 Stars
Not as skookum as i hoped.
I purchased this Non-contact voltage detector because its made by Klein tools a reputable tool company. Before i purchased this one i bought another generic brand version of this tool. it worked surprisingly well. How ever eventually it broke. I was considering replacing it with the Klein Tools NCVT-3 how ever the high tier detectors by klein lack the protruded tip that allows you to suspend the detector in a outlet. A feature i find useful when im trying to find a breaker or switch for an outlet. So i went with this version.It is very handy. It is smaller and feel lighter than my generic version. Its bright color makes it easy to spot. It is UL listed and very simple to use. it has no weird bumps or ridges. its a little wider where the plastics are joined and tapers into its irregular symmetrical hexagonal shape. You can hardly feel lines from the molds meet.Its design is smart. One flat PCB board that slides in through the rear. One clear plastic piece and a cap. Theres some padding to stop the batteries from clinking inside. With a spring on both the negative and positive terminal. meaning you can shake the thing and it wont raddle.My old one failed when the plastic on the the tip snapped exposing the metal tip. Klein knew this was a weak point and they beefed up the plastic. The plastic on the tip is thicker. Leading up to the tip its much more rounded meaning its better able to distribute pressure. I did purchase a small case to house the tool in while in my tool bag just in case.There are few things things i DON'T like about this tester.I dont like the red cap. Its is very thin and it wasn't cleaned up. If you look carefully at the pictures i provided (And the 3rd photo on the listing) you can see the yellow plastic from behind the red cap. The plastic is very very thin here. On mine its clear they didn't properly clean the edge from the plastic as well.I don't like the use of complaint mechanism. In this case the use of the clip to hold the red cap on. The plastic will get fatigue and it will get brittle. When that happens it will break and this tool will become trash.Last is the is the button. It feels sloppy. The issue is the lack of touch feed back. Maybe this wasn't an issue a few years ago. But now especially now that we are used to haptic and audio feed back. Think of your phone. As you type on it your phone may vibrate slightly on each touch or play a small tick tone as you press the screen. When you press the button on your tv remote you know the button has been pressed when you feel the rubber dome collapse.This tester doesn't have any feed back. its possible to press the button light enough that you feel the dome buckle and bottom out yet the tool didn't receive and input. And when you do press it hard enough to turn it on the light doesn't come on immediately. it makes the tool feel a little bit unresponsive. klein tools if your reading this is an easy fix.I will say that i work side by side with a lot of electricians and we talk about tools. A lot of them have had these voltage testers for a very long time with the belt clip intact.Conclusion: This tool is an essential in any tool box hows ever im afraid it wont be a forever tool. And i recommend you purchase a case to carry the tool around. And if you wont be using it to find breakers then id recommend the Klein tool NCVT-3 instead. I suspect the threaded cap will be more durable in the long run then the clip on cap. It also has a nice meter and LED built in.
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Top reviews from the United States

Reviewed in the United States on April 5, 2024
Pattern Name: TesterVerified Purchase
Low voltage for Christmas lights and auto. It’s a Klein!
Reviewed in the United States on August 13, 2016
Pattern Name: TesterVerified Purchase
Let me say right off the bat that I am a female novice and electrical makes me nervous. Usually I hire out anything, but feel it is silly to do so for minor jobs, especially since I am kind of off the beaten path and would have to pay for hours of travel time for a short time here. My accomplishments so far have been moving an existing light box (to center with new sink) and install a timer switch on an existing bath fan switch.

Months ago a ceiling fan/light had quit working; this is one that isn't used often but with the hot weather lately (and no AC), I'm ready for a useable fixture. I couldn't figure out which breaker to turn off using my usual tool (with socket/plug inserts and detector "pen" that runs along breakers to signal which is correct). I was afraid it was the wiring in the ceiling, which would not be pretty to get to. I turned the whole house breaker off to remove the old fan/light, and it seemed as if that least one wire might have become unattached, but I couldn't be for certain (I don't know much about electrical and it makes me nervous, so I err on the side of super caution). Soooo, I did a couple of minutes research, ordered this Klein tool based on how intuitive it was and ease of the signals it gave.

When the tool arrived a couple of days ago, I opened it up, put the directions to the side (hey, I work two jobs so don't get much sleep - I just wanted to see if it was easy), turned it on (batteries included), and found that it is easy to use and understand for my purpose. I'm happy to report the ceiling wiring is fine - or at least has power running thru when the switch is flipped (whew!). When I am ready to put up the new fan/light, I will read the directions just to make sure I don't miss something (remember, I'm a novice) and the Klein tool will be in use to make sure the wires are dead (and I will write down which breaker it is).
26 people found this helpful
Report
Reviewed in the United States on June 26, 2019
Pattern Name: TesterVerified Purchase
Turns out it was a good thing when I misplaced my old hardware-store brand-x voltage tester. Shortly after I bought this replacement, I found the old one I had been using for years and I used it to check a circuit for some outdoor wiring that was no longer working right. It showed no hot circuits, so I pulled the wiring out of the junction box and removed the wirenuts for some more specific tests. Placing the old tester directly on the bare wires gave me a HOT reading! The tester should have told me that before I removed the wirenuts. I went back to my shop and got the Klein tester and tried it where I tried the old one, on the direct-burial Romex outside of the box, and it showed hot everywhere. Bottom line: I could have gotten lit up when touching those wires that the old tester told me were dead. Just to make sure, I tested the old against the new in half a dozen more places on that outdoor circuit and got inconsistent reports from the old one and consistent ones with the new one. An inconsistent voltage tester is worse than no voltage tester at all, and I've been using that thing for years! Anyway, the Klein tester is well made and works great, just like every other Klein tool I own does.
3 people found this helpful
Report
Reviewed in the United States on January 13, 2020
Pattern Name: TesterVerified Purchase
I purchased this Non-contact voltage detector because its made by Klein tools a reputable tool company. Before i purchased this one i bought another generic brand version of this tool. it worked surprisingly well. How ever eventually it broke. I was considering replacing it with the Klein Tools NCVT-3 how ever the high tier detectors by klein lack the protruded tip that allows you to suspend the detector in a outlet. A feature i find useful when im trying to find a breaker or switch for an outlet. So i went with this version.

It is very handy. It is smaller and feel lighter than my generic version. Its bright color makes it easy to spot. It is UL listed and very simple to use. it has no weird bumps or ridges. its a little wider where the plastics are joined and tapers into its irregular symmetrical hexagonal shape. You can hardly feel lines from the molds meet.

Its design is smart. One flat PCB board that slides in through the rear. One clear plastic piece and a cap. Theres some padding to stop the batteries from clinking inside. With a spring on both the negative and positive terminal. meaning you can shake the thing and it wont raddle.

My old one failed when the plastic on the the tip snapped exposing the metal tip. Klein knew this was a weak point and they beefed up the plastic. The plastic on the tip is thicker. Leading up to the tip its much more rounded meaning its better able to distribute pressure. I did purchase a small case to house the tool in while in my tool bag just in case.

There are few things things i DON'T like about this tester.
I dont like the red cap. Its is very thin and it wasn't cleaned up. If you look carefully at the pictures i provided (And the 3rd photo on the listing) you can see the yellow plastic from behind the red cap. The plastic is very very thin here. On mine its clear they didn't properly clean the edge from the plastic as well.

I don't like the use of complaint mechanism. In this case the use of the clip to hold the red cap on. The plastic will get fatigue and it will get brittle. When that happens it will break and this tool will become trash.

Last is the is the button. It feels sloppy. The issue is the lack of touch feed back. Maybe this wasn't an issue a few years ago. But now especially now that we are used to haptic and audio feed back. Think of your phone. As you type on it your phone may vibrate slightly on each touch or play a small tick tone as you press the screen. When you press the button on your tv remote you know the button has been pressed when you feel the rubber dome collapse.
This tester doesn't have any feed back. its possible to press the button light enough that you feel the dome buckle and bottom out yet the tool didn't receive and input. And when you do press it hard enough to turn it on the light doesn't come on immediately. it makes the tool feel a little bit unresponsive. klein tools if your reading this is an easy fix.

I will say that i work side by side with a lot of electricians and we talk about tools. A lot of them have had these voltage testers for a very long time with the belt clip intact.

Conclusion: This tool is an essential in any tool box hows ever im afraid it wont be a forever tool. And i recommend you purchase a case to carry the tool around. And if you wont be using it to find breakers then id recommend the Klein tool NCVT-3 instead. I suspect the threaded cap will be more durable in the long run then the clip on cap. It also has a nice meter and LED built in.
Customer image
4.0 out of 5 stars Not as skookum as i hoped.
Reviewed in the United States on January 13, 2020
I purchased this Non-contact voltage detector because its made by Klein tools a reputable tool company. Before i purchased this one i bought another generic brand version of this tool. it worked surprisingly well. How ever eventually it broke. I was considering replacing it with the Klein Tools NCVT-3 how ever the high tier detectors by klein lack the protruded tip that allows you to suspend the detector in a outlet. A feature i find useful when im trying to find a breaker or switch for an outlet. So i went with this version.

It is very handy. It is smaller and feel lighter than my generic version. Its bright color makes it easy to spot. It is UL listed and very simple to use. it has no weird bumps or ridges. its a little wider where the plastics are joined and tapers into its irregular symmetrical hexagonal shape. You can hardly feel lines from the molds meet.

Its design is smart. One flat PCB board that slides in through the rear. One clear plastic piece and a cap. Theres some padding to stop the batteries from clinking inside. With a spring on both the negative and positive terminal. meaning you can shake the thing and it wont raddle.

My old one failed when the plastic on the the tip snapped exposing the metal tip. Klein knew this was a weak point and they beefed up the plastic. The plastic on the tip is thicker. Leading up to the tip its much more rounded meaning its better able to distribute pressure. I did purchase a small case to house the tool in while in my tool bag just in case.

There are few things things i DON'T like about this tester.
I dont like the red cap. Its is very thin and it wasn't cleaned up. If you look carefully at the pictures i provided (And the 3rd photo on the listing) you can see the yellow plastic from behind the red cap. The plastic is very very thin here. On mine its clear they didn't properly clean the edge from the plastic as well.

I don't like the use of complaint mechanism. In this case the use of the clip to hold the red cap on. The plastic will get fatigue and it will get brittle. When that happens it will break and this tool will become trash.

Last is the is the button. It feels sloppy. The issue is the lack of touch feed back. Maybe this wasn't an issue a few years ago. But now especially now that we are used to haptic and audio feed back. Think of your phone. As you type on it your phone may vibrate slightly on each touch or play a small tick tone as you press the screen. When you press the button on your tv remote you know the button has been pressed when you feel the rubber dome collapse.
This tester doesn't have any feed back. its possible to press the button light enough that you feel the dome buckle and bottom out yet the tool didn't receive and input. And when you do press it hard enough to turn it on the light doesn't come on immediately. it makes the tool feel a little bit unresponsive. klein tools if your reading this is an easy fix.

I will say that i work side by side with a lot of electricians and we talk about tools. A lot of them have had these voltage testers for a very long time with the belt clip intact.

Conclusion: This tool is an essential in any tool box hows ever im afraid it wont be a forever tool. And i recommend you purchase a case to carry the tool around. And if you wont be using it to find breakers then id recommend the Klein tool NCVT-3 instead. I suspect the threaded cap will be more durable in the long run then the clip on cap. It also has a nice meter and LED built in.
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Azteca
5.0 out of 5 stars Buen producto
Reviewed in Mexico on April 17, 2019
Pattern Name: TesterVerified Purchase
Muy buena calidad de producto. Se siente muy resistente. Funcionamiento correcto.
Carlos
5.0 out of 5 stars Muy practico
Reviewed in Mexico on February 5, 2020
Pattern Name: TesterVerified Purchase
Muy útil y funciona a la perfección, el único inconveniente en el uso cotidiano es que por la ubicación del botón de encendido, Al tenerlo en la camisa o camisola es común que se encienda por un roce accidental.
bobby
5.0 out of 5 stars BUEN PRODUCTO
Reviewed in Mexico on July 8, 2020
Pattern Name: TesterVerified Purchase
FACIL DE USAR
Scientist
4.0 out of 5 stars Un buen probador de voltaje sin contacto
Reviewed in Mexico on August 11, 2018
Pattern Name: TesterVerified Purchase
Este probador tiene una punta metálica que está aislada por un plástico. La punta detecta la presencia de voltaje por inducción electromagnética, por lo que no necesita hacer contacto directamente con un cable expuesto para hacer una indicación. Cuando la punta se acerca a una fuente de voltaje empieza a emitir un pitido (bip), que se hace más rápido entre más cerca esté la fuente.

El probador funciona bien en una instalación eléctrica cuando todos los cables presentes tienen el mismo color (por ejemplo, negro), y se busca distinguir el cable vivo (fase) del cable sin voltaje (neutro). Los cables que son fase deben sonar con el pitido constante, mientras que los neutros no deben sonar, o el pitido debe ser lento.

Si los cables no están conectados a contactos o apagadores, es decir, si están sueltos, ambos cables, la fase y el neutro, pueden tener la misma inducción, y por lo tanto el probador no podrá distinguir exactamente cuál es la fase, y cuál es el neutro. En este caso es necesario utilizar un multímetro digital para realmente leer el voltaje de cada cable y distinguirlos. O bien, se pueden conectar los cables a los contactos, y luego ya probarlos con el medidor NCVT, e intercambiarlos de posición si es necesario.
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User
5.0 out of 5 stars Indispensable
Reviewed in Mexico on June 10, 2019
Pattern Name: TesterVerified Purchase
Es muy útil para saber si debes tener cuidado con los cables que ves o no tienen corriente