Fluke 1LAC II A Non-Contact Voltage Tester

Model#: Fluke-1LAC-A-II Part#: 2433021 UPC#: 0 95969 29087 6
Fluke 1LAC II A Non-Contact Voltage Tester is rated 4.5 out of 5 by 11.
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  • Fluke 1AC II A2 VoltAlert Electrical Tester

Key features

  • Non-contact voltage detection from 20 to 90 V AC
  • On/off button with continuous self-test helps prolong battery life
  • Fast, simple go/no-go voltage detection
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Product overview: Fluke 1LAC II A Non-Contact Voltage Tester

The pocket-sized voltage detector

The Fluke 1LAC II Non-Contact Voltage Tester is 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 there's voltage present. Electricians, maintenance, service, safety personnel, and homeowners can quickly test for energized circuits in the workplace or at home.

Simple to use, the way you want it

The 1LAC II tester lets you work the way need to in different situations:

Audible/Silent modes

On/Off button to help prolong battery life

CAT IV 1000 V for added protection

Upon detection of voltage, the tester tip glows red and beeper sounds (if activated). The 1LAC II is backed by a two-year warranty.

Specifications: Fluke 1LAC II A Non-Contact Voltage Tester

Operating PrinciplesSenses the steady state electrostatic field produced by AC voltage through insulation without requiring contact to the bare conductor. A red glow at the tip and a beeping noise (if not switched OFF) indicates the presence of voltage.
Voltage sensing ranges20 V to 90 V control circuit model
Detector tip styleRound-tip
Light sourceOne high intensity red LED
Agency Approvalsc CSA us, CE, C-Tick
Safety Rating1000 V, CAT IV
Safety ComplianceMeets IEC 61010-1:2001, UL 61010-1 (2nd ed.), CAN/CSA-C22.2 No. 61010-1-04, and ISA-82.02.01 Pollution Degree 2
EMC ComplianceMeets IEC 61326-1:2006
IP RatingIP 40
Operating Temperature-10°C to 50°C (-14°F to 122°F)
Operating Humidity Ranges0% to 95% (0°C to 30°C)
0% to 75% (30°C to 40°C)
0% to 45% (40 to 55°C)
Operating Altitude3000 m
CleaningClean with damp cloth
Batteries2 AAA alkaline batteries included
Battery LifeTypical battery life of greater than 1 year
Warranty PeriodTwo years
Product does not respond to random electrostatic discharge.

Models: Fluke 1LAC II A Non-Contact Voltage Tester

Fluke 1LAC II A VoltAlert™ Electrical Tester
Part#: 2433021
UPC#: 0 95969 29087 6


  • Low Voltage Detector 20-90 VA
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Rated 5 out of 5 by from Fluke volt pens i trust Fluke equipment to be and stay accurate and reliable. Quality may cost a bit more but is worth it.
Date published: 2021-04-10
Rated 5 out of 5 by from Simply works as should Works as advertised. Very happy with the purchase. I used to have the Klein version but it died on me within a month and wouldn't even work even with new batteries. I've been through many different types of hot-sticks so far and Fluke is easily the best, have yet to have any problems with fluke hot-sticks. So far this model has been hands down the best. Glad I listened to all the veteran electricians out there when I asked around. It works as advertised, easy 5/5 from me.
Date published: 2016-12-11
Rated 2 out of 5 by from The beep sound foult This tester not work well, the sound funtion sound only when is turn off
Date published: 2013-11-08
Rated 5 out of 5 by from the most accurate product I've been working with different similar products until 3 years ago when somebody show me how fluke is different from any other product on market. Since than, all my testers are fluke
Date published: 2013-08-21
Rated 5 out of 5 by from Quick and dirty I carry one of these in my shirt pocket, it's the first thing I grab for any type of electrical problems. I'll admit I don't trust it with my life even though I've never had a false negative, only the occasional false positive from it (usualy due to motor/microwave/high voltage circuits with loaded capacitors, which do still present a safety risk, but can falsely imply you have power even when you don't). I'll still put a real meter and even short to ground before I go sticking my hands in anything. This does however tell you very quickly if the problem is in the device/equipment in question, or just no power getting to it, a real time saver. Its so simple to use even my 7 year old grabs it to test for power if the light or TV doesn't come on, or to confirm his rechargeable toys are getting power to them. Something not working? Just hold the tip near the power cord, its literally that easy to use, confirms right away if you're getting power to it or not.
Date published: 2012-09-29
Rated 5 out of 5 by from Handy This is a much used little devise. Works great, visual & sound when live wire is detected. Thru wires without having to puncture with meter & probes. Just get it close to current & it'll pick it up.
Date published: 2012-09-15
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