Fluke 1AC-A1-II VoltAlert Non-Contact Voltage Tester

  • Voltbeat technology and continuous self-test - so you always know it is working
  • Upon detection, tip glows and beeper sounds
  • CAT IV 1000 V for added protection
  • Range 90-volt to 1000-volt
  • 20-volt to 90-volt AC control circuit model also available

Multiple editions of the Fluke sensor are reviewed on this page, so to be clear, this is about the 1AC-A1-II. For about 20 years I owned an earlier version, the 1AC-A. That lit up but didn't beep. And it was always on. It died after a second battery leak. That's right, even being always-on, a pair of AAA batteries lasted about 10 years. This (1AC-A1-II) is not always on, it has a power button. It has two modes: beep and silent. Use silent mode when probing around after the kids are asleep, or if you're asked to troubleshoot an electrical connection in a boardroom while a meeting is in progress. Otherwise beep mode is a valuable redundant attention-getter. Beep/silent mode is controlled by how long you press the power button. The button is in a recess to avoid accidental engagement, but that also makes it a little iffy to turn on/off and get the mode right. When turned on in either mode, the tip glows with a distinctive double-burst every couple of seconds. When voltage is detected, the glow goes steady and there's the beep. Stick the tip in a neutral slot and there's no signal. In the live slot there is. Along a current-carrying cable there's a signal. Always test with a known live first to make sure it lights up and beeps. In the event that the unit has died, you don't want your finger to assume the role of probe: it may glow, but it sure won't beep. When you switch off a breaker for one circuit, you CAN get a shock on a neutral or live if there's a cross-circuit wiring fault. Or if you switched off the wrong breaker. And there are such things as mis-wired receptacles where live and neutral are swapped. So the question is not whether you know about electricity and plan to do your own wiring. These devices aren't only for the knowledgeable. They tell you whether touching something around the house - a stovetop or kettle - will electrocute you. They're essential tools for every household. And this is the best consumer model on the market IMHO.

I like this gadget its impressive saves a lot of what used to take 3 hands to use a multi volt meter I also like the tone and solid light that is on when voltage is detected . It was a toss up between the Fluke and one other but I went online and this one was slightly higher rated by electricians due to reliability , I kinda like being extra safe when it comes to Electricity as I am not even close to being an Electrician . I also go on youtube and listen to these guys before I tackle any electrical project its worth the time I have to thank the people and manufacturers that put out those videos .

I like that it has audio and visual indication of voltage but you can turn the audio off if you are in a area you need to be quiet. I also like that it takes regular AAA batteries instead so some hard to find coin cell batteries. I had the fluke FLK2AC before which didn't have audio making it hard to use when around direct sunlight and it was always on so when I walked around and it rubbed against my shirt (static electricity) it would like up. Not a big deal but inevitably someone would stop me an tell my I left me tester on. This one is way better.

After having some shocking experiences, I decided to get one of these. This pen is WELL worth the cost many times over and it's saved me several times over. The most recent time, I disabled a few breakers I thought would nuke an outdoor GFCI that had been disabled by ants. The pen had verified that I had the right circuit. I unscrewed the outlet and something told me to double-check just to be sure because of how much stuff had fallen out of the outlet. Sure enough, it screamed like I was gonna become a holy man if I decided to start messing with wires. I discovered our 1970's house had 2 labels swapped on our panel for outdoor outlets. Whoops.

It might have saved our lives. I bought this based on a YouTube video about RV trailer hot skins. As soon as it arrived I read the instructions. They were somewhat confusing, but I finally figured them out. I tested the Fluke on a live outlet according to the instructions, then used it on my trailer. It indicated a problem with the outside of my trailer. After a thorough investigation, I determined we had internal wiring issues that were causing the outside of my trailer to become electrified. We remedied the situation asap. We had no idea there was any existing issue. Scary, but now fixed. HIGHLY RECOMMENDED FOR ALL RVers.

Great product to help keep you safe while working with potentially live power wires. Think of this as insurance for under $30. Be aware when testing those new-ish tamper proof wall outlets, you may or may not get a good reading. I get around that issue by plugging in a known short extension cord to the outlet, then test. Also, the description of this listing claims the Fluke 2AC/90-1000VC VoltAlert Voltage Detector optionally beeps, but it does not. "The Fluke 2AC/90-1000VC VoltAlert Voltage Detector is a pen-style, pocket-sized non-contact voltage detector that tests for energized circuits and defective grounds by sensing the steady state electrostatic field produced by AC voltage through insulation. If voltage is present, the tip glows red and the detector beeps (optional)." According to the Fluke website, only the 1AC II model beeps, and there is nowhere in the 2AC Instruction Sheet that indicates a beeper. For my use, this was not a problem as the red tip indicator was noticeably bright enough. This was not a deal breaker for me, but if you really need the beep indicator, look for the 1AC II model.

As an electrician, I've owned many of these voltage testers before and they all pretty much work the same. However, what really sets the Fluke apart from the others to me is that it's less sensitive to lower voltages and the power button is a lot harder to press accidentally than most other models. One of my chief complaints about these testers is that they usually turn on accidentally and start beeping away in my pocket from the static that builds up due to simply walking. With the Fluke I haven't encountered either of those issues. In light of this, I doubt I'll ever buy another brand again.

FLUKE is the brand you can trust for electrical test and measurement tools. The 1AC is the one you want as it has the audible beep. The newer 2AC lost this very important feature. If you are working in bright conditions, the glowing red tip coupled with the audible beep are much safer than a glowing tip which can be washed out by sunlight. Not to mention, I don't want my tester to be always on as in the 2AC version. I want to conserve battery life and turn it on when I need to. In addition, it already has a Voltbeat feature which lets you know it's on and working. It tells you this by a tip which blinks twice in rapid succession.

0:00 0:00 This video is not intended for all audiences. What date were you born? JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember12345678910111213141516171819202122232425262728293031201920182017201620152014201320122011201020092008200720062005200420032002200120001999199819971996199519941993199219911990198919881987198619851984198319821981198019791978197719761975197419731972197119701969196819671966196519641963196219611960195919581957195619551954195319521951195019491948194719461945194419431942194119401939193819371936193519341933193219311930192919281927192619251924192319221921192019191918191719161915191419131912191119101909190819071906190519041903190219011900 Submit Adobe Flash Player is required to watch this video. Install Flash Player Works great for finding the line wires when installing a GFCI. I used to have a Sperry voltalert but it was too sensative, if you were 5in away from the wire it would go off. You need to actually touch the wire for it to go off! I love it!

I had one before, however the battery leaked inside and now it doesn't function. So make sure you remove the alkaline batteries when not in use for a while. I switch over to using rechargeable batteries instead, that way if I don't use it for a while, the nihm batteries would be dead but they won't leak like alkaline. After the first one died, I went with Klien brand voltage detector, however that one doesn't quite work as good as the Fluke. If you bang it around it kind of goes off. You can tap the side and it would beep. The Fluke won't go off if you bang it around or hit it with your hand. You really don't want a false positives, otherwise you are always wondering if there is really any electricity there or not.

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