Fluke Volt Alert

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fluke voltage detector

The fluke pocket voltage sensor in action. Hot cord!

This $20 pocket device can save your life!

This voltage sensor from Fluke is a critical tool for anyone that works out in the field or does any sort of repair around their home.  Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home.

Voltage sensors allow you to quickly check to see if a circuit you are about to work on is hot or dead (has electricity present or not.)


  • Voltbeat technology and continuous self-test.
  • Upon detection, tip glows and beeper sounds.
  • CAT IV 1000 V for added protection.
  • Expanded range: 90-volt to 1000-volt AC or 200-volt to 1000-volt AC depending on model.
  • Pocket size.

The Fluke Volt Alert gets my seal of approval as basically being required for a building engineer.

Out in the field this is vital because we are dealing with big voltages, like 600V.  It is still important at home even though most voltages will be at 120.

Click here for the Fluke Volt Alert at Amazon

Fluke 1AC-A1-II Volt-Alert Sensor Product Description

fluke pocket tester

Me using my pocket tester to check a ballast at work.

The next generation-voltAlertAC voltage testers from Fluke are easy to use – touch the tip to a terminal strip, wiring, an outlet, etc.  If the tip lights up and the unit beeps, you know voltage is present.

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).

Building Engineer Training Real Talk:

I don’t work on ANYTHING hot and if you value your life – or caring for your wife or children – you should follow the same rule.  It’s just stupid to risk it trying to save time or be cool.  Working on live circuits is for whatever dumbass reason argued about.  I am one of the only ones that firmly believes in working on nothing hot.

Fluke Volt Alert

Pocket sized Fluke Volt Alert

All it takes is one time.  One little tiny amount of voltage can get your heartbeat going to the wrong drum.  And then that’s it.  No going home to the kids that afternoon, all because you didn’t want to take 5 minutes and find a breaker.  If your boss or co-workers try to pressure you into working on something hot – nope.  What do they usually say?

“We can’t find the breaker”  or “we don’t want to interrupt the customer.”  What does this mean?  It means your employer cares more about keeping the tenant happy rather than guaranteeing you life.  This is why I don’t agree with it.

Safety Tip Just for You:

Before you use it EVERY time, test it on a known, hot (live) power source.

This was taught in the Navy before using some test intruments.  Before using them, we would have to check it on another good, calibrated device to make sure it was working properly.  To do this with the Fluke volt alert tool, all you have to do is check on a random outlet or cord before testing the one you are working on.

If the voltage sensor lights up and/or beeps on your test one, you know it should work for your project one.  Capiche?  If you test 10 outlets and it never beeps, maybe it’s the batteries.  See?  You never would’ve known it was faulty, you would have thought the circuit you were working on was dead (no power.)

Fluke Volt Alert Customer – words from mouth

Rating: ★★★★½

This little tool can be a lifesaver when working on electrical circuits. – Morgen F. Benner

Tough, handy, quick and useful.  I work in a remodeling business, and this is an indispensable tool.  I repeat, indispensable.  The tip simply lights up when you touch it to the “hot” side of a Romex wire, instantly telling you if a wire is live or not.  “Is this switch/receptacle that I’m about to take apart and work on/touch hot?”  Well, now you know. – By Elixirgy

Once you start using this you will wonder why you stayed in the dark ages so long. Quickly check, double-check that a line or outlet is not live. Makes troubleshooting quick. – Tom Jones


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