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Fluke

Fluke 1AC II VoltAlert Non-Contact Voltage Tester, Pocket-Sized, 90-1000V AC, Audible Beeper, CAT IV Rating

Based on 15,584 reviews
Condition: New
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$36.22
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Nov 5
Order within 15 hours and 42 minutes

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At a glance

Condition
New
Model
FLUKE-1AC-A1-II
Dimensions
10.24 x 7.5 x 1.46 in
Weight
59 g
Color
Red
Power Source
Alkaline
Style
ACV DETECTOR 90-1000V
In the box
Fluke-1AC-A1-II ACV Detector 90-1000V with 2 AAA Alkaline batteries
Warranty
2 years

Features 4

  • Be aware of voltage easily - the tip glows red and a beeper sounds when voltage is detected
  • Continuous self-test so you always know its working
  • Voltage detection range for wide application use - 90 V to 1000 V AC or 200 V to 1000 V AC
  • Audible/Silent mode for added convenience

Description

Simply touch the tip to a terminal strip, outlet or cord. When the tip glows red, and the unit beeps, you know there's voltage in the line. Electricians, maintenance, service, safety personnel can quickly test for energized circuits and defective grounds on the factory floor, in the shop. Continually tests its battery and its circuit integrity with a periodic double flash visual indication using fluke voltbeat technology. It comes with a two year warranty. It detects line voltage from 90vac - 600vac (1AC-AI-II). Simply touch the tip to a terminal strip, outlet or cord. When the tip glows red, and the unit beeps, you know there's voltage in the line. Electricians, maintenance, service, safety personnel can quickly test for energized circuits and defective grounds on the factory floor, in the shop. Continually tests its battery and its circuit integrity with a periodic double flash visual indication using Fluke Voltbeat technology. It comes with a two- year warranty. It detects line voltage from 90VAC - 600VAC (1AC-AI-II). P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer The next generation-voltAlertAC non-contact-voltage testers from Fluke are easy to use - just touch the tip to a terminal strip, outlet, or supply cord. When the tip glows red and the unit beeps, you know-voltage is present. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home. See more

Specs 21

Brand Fluke
Power Source Alkaline
Style ACV DETECTOR 90-1000V
Color Red
Item Weight 59 g
Minimum Operating Voltage 90 volts
Upper Temperature Rating 50 °C
Measurement Type Voltmeter

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

Excellent product compared to others of same type that are available to the homeowner, hobbiest, commercial user.
Size: 1AC-A1-II, 90-1000V
Quick delivery, reasonably-responsible packaging from Amazon, Excellent product compared to others of same type that are available to the homeowner, hobbiest, commercial user. We tried 4 other types, all name brands (including a Sears unit); all were overly-sensitive and could not/ or would not narrow down their detection to a single hot wire in a junction box, or gave false hot readings on cold lines. Two of the four tested units detected signals when held in the air...2 feet from any wiring! We finally went to an electrical contractor's supply house and were told to go with the Fluke voltage detectors. Two models were available...but input from two electricians (not sales or counter persons) said go with the 1AC-A1-11 version only. Best $$ value was with Amazon...retail outside pricing was all over the map! Include product instructions are clear, concise, and the product works very well...it actually reads/is able read the hot wires in a bundle, no false beeps at very close range, can be shut off, and so far has been bullet-proof. UPDATE: Product in use now for 5 weeks: has been flawless, same battery, no false readings, used recently to find an open wire in the attic feeding a ceiling light fixture ...found the break (tone stopped beeping) within 10 minutes of running this tool along the exposed romex (insulated wire cable) running from a junction box to wall switch (break found inside a wire nut in a splice box in the attic!), Love this tool...and it just saved me $$$ from having to call an electrician or run a new romex line. Store this tool in a pouch or "Mag-lite" type case or belt pouch so it doesn't get crunced by your socket set or vice grips! (A valuable accessory that should be included). Product rating should be 10 out of 10, not just 5 out of 5. See note on protecting with a storage pouch. In conclusion: Not a gadget or stocking stuffer...a tool that works and stands out compared to the competition; and yes, I'm picky! Weatherbug ... show more
Reviewed in the United States on February 15, 2015 by Weatherbug
Good Product
Size: 1AC-A1-II, 90-1000V
Works well but will pick up stray voltage
Reviewed in the United States on October 6, 2026 by TEXPAT101
A Great Tool For Anybody Doing Even Basic Electrical Work
Size: 1AC-A1-II, 90-1000V
I first saw this tool being used on that home improvement show, Holmes on Holmes. Mike Holmes was testing all this substandard wiring and figuring out that a lot of it was live when it shouldn't be, using this tool. I am no Mike Holmes, I'm just an experienced do-it-yourself guy, but I have done a LOT of electrical work over the years, including all the electrical work in a full gut kitchen remodel, a full gut bathroom remodel and so on. I have had my electrical work inspected and permitted multiple times without incident, so I do know how to do basic household wiring correctly. The only time I ever got shocked in all that time was in a situation where the original wiring was done wrong. They ran two separate circuits through the same, ordinary light switch box. Who would do something that stupid? Apparently somebody. I shut off the circuit I was planning to work on without incident, but the other circuit in the box was still live and I didn't know it. Fortunately, it was just a 15Amp circuit and so this was more unpleasant than anything else, but it was a nice reminder that, even when you do know what you are doing, you don't know whether the guy who came before you had the same skills you have. In another house I lived in, I figured out that the guy before me actually had two circuits feeding the same outlet (I called in a pro on that one IMMEDIATELY) but you just never know what crazy stuff you might find. This is a great tool to keep you safe from all that kind of stuff. You just wave it near a wire and it tells you the wire is hot with a tone and a bright light. The thing I like about it is that the end of the probe is shaped like one blade of an electrical plug, so it slips into the socket and then the pen will stay there continually making a sound as long as the outlet is hot. That is incredibly handy in trying to figure out whether you have the right breaker or not. It is also a Fluke, which is one of the most respected brands in electronics/electrical testing. This is a high quality product that works reliably every time I've used it. Do yourself a favor -- buy this and use it every time before you do any electrical work. It will help to keep you safe -- it is a crazy world out there. We all know that not everybody who does electrical work should do electrical work. There is a lot of scary, unsafe, substandard stuff out there. Don't get yourself hurt or killed because you couldn't be bothered to buy this and take 5 seconds to wave it at something you are about to work on that you "know" is safe. It is really a no-brainer to buy this and use it every time. I never do electrical work without it now. ... show more
Reviewed in the United States on February 19, 2013 by team W
Awesome
Size: 1AC-A1-II, 90-1000V
You can’t go wrong with fluke. I use it everyday with no issues.
Reviewed in the United States on September 7, 2026 by Leslie
I think I am a "Squelch" meter kind of guy
Size: 1AC-A1-II, 90-1000V
I am not an electrician, but I have long since lost count of how many "small" electrical projects I have taken on over the years. I always try to use a voltage tester before digging into any existing wiring, although I have a few wire cutters with that familiar little notch in the blade where I cut a live wire. My existing Klein tester finally died after 10 years or so, and I didn't like the look of the new ones, so I gave this model a shot. I always associated Fluke with nearly indestructible test equipment. === The Good Stuff === * This meter definitely errs on the side of reduced false positives. If I put my old Klein meter next to a 110v line encased in metal conduit, it would scream at it. Likewise, put it anywhere near a live AC outlet, and it would alert. Of course it had an adjustable squelch, and it was always a bit of a calibration exercise before I used it. The Fluke is much quieter. If you hold it next to live Romex, it will alert, but not a live outlet, and certainly not an wire encased in steel conduit. As a result, it is both more and less useful, depending on how you think about it. * Because of the lower sensitivity, it took me a while to learn to trust it. I sort of do now and will continue to use it. === The Not-So-Good Stuff === * Surprisingly, given its lower sensitivity, it does seem to give lots of false positives when I work near the roof of my metal barn. If I de-energize one length of Romex, and there are others within a foot of so of the roof, I get false positive alerts. The lack of a squelch makes it hard to get a feel for just how serious the alert is. * The unit does not seem to be made to the same standards as my trusty (and much more expensive) Fluke VOM's. Time will tell how long this tester holds up. === Summary === I am slowly learning how to work with this tester, but I think I am more at home with a unit with a sensitivity control. While they can be a bit harder to use, I did have more confidence in my old Klein sniffer. ... show more
Reviewed in the United States on March 22, 2018 by Andy in Washington
Very good
Size: 1AC-A1-II, 90-1000V
*Rating: 5/5* *Product:* Fluke 1AC II VoltAlert Non-Contact Voltage Tester *Performance:* Excellent I recently purchased the Fluke 1AC II VoltAlert Non-Contact Voltage Tester, and it's become an indispensable tool in my electrical work. This device exceeded my expectations in every aspect. *Pros:* 1. Accurate readings: Reliable detection of voltage presence (up to 1000V AC). 2. Easy to use: Simple, intuitive design requires minimal training. 3. Safety first: Non-contact design ensures user safety, reducing risk of electrical shock. 4. Durable construction: Rugged build withstands harsh environments. 5. Bright LED indicators: Clear visual cues for voltage presence. 6. Battery life: Long-lasting battery (up to 2 years). 7. Compact design: Fits easily in toolboxes or pockets. *Cons:* None *Key Features:* - Non-contact voltage detection - Voltage range: 100-1000V AC - Frequency range: 50-400Hz - LED indicators for voltage presence - Battery life: up to 2 years - CAT IV 1000V safety rating *Recommendation:* The Fluke 1AC II VoltAlert is a must-have for: - Electricians - HVAC technicians - Maintenance personnel - DIY enthusiasts Its accuracy, safety features, and durability make it an excellent investment. *Rating Breakdown:* - Quality: 5/5 - Performance: 5/5 - Value: 5/5 - Overall: 5/5 *Would I Buy Again?* Absolutely, without hesitation. *Comparable Products:* - Klein Tools NCV1 Non-Contact Voltage Tester - GreenLee VT-1 Non-Contact Voltage Tester Fluke's reputation for quality and reliability shines through in this product. If you're seeking a trustworthy non-contact voltage tester, look no further. *Tips for Improvement:* None, this product meets and exceeds expectations. *Certifications:* - CAT IV 1000V safety rating - UL (Underwriters Laboratories) listed - CE (Conformité Européene) certified ... show more
Reviewed in the United States on October 11, 2024 by Mahmoud najar
This is an absolute must have tool if you work with electrical!
Size: 1AC-A1-II, 90-1000V
Review Image by Travis
This tool is an absolute must have if you work with electrical. This is my second purchase of the same item, but I am okay with having to purchase it again because the first one lasted me over fifteen years. You cannot deny that that is a sign of the quality and durability of the product. I was happy to see that literally nothing had changed with it. Operating the tool is straightforward but be sure to review the instructions. Overall, you get an excellent product from a high-quality brand. The tool is accurate, perfect size and design, the batteries last a long time, and best of all, the tool has never let me down. I could not be happier with this purchase. ... show more
Reviewed in the United States on March 18, 2025 by Travis
Saves not only time & money, but prevents bodily harm.
Size: 1AC-A1-II, 90-1000V
I should’ve put my review when I first bought this years ago on how it helped. My older refrigerator stopped working. When I held this tester next to the plug itself while plugged in showed Electric was getting to the cord. As I slowly ran the tester from the plug to the refrigerator about a foot and a half away, it stopped showing Electric. It was actually the spot where constantly moving the refrigerator and severed the wire inside the protective coating. This device proved invaluable, by saving vast amount of time and money. Just one use of this tester paid for itself ! ... show more
Reviewed in the United States on September 14, 2026 by Dennis L
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