1AC-II/1LAC-II VoltAlert

The pocket-sized voltage detector

The next generation VoltAlertTM ac voltage testers from Fluke are easy to use—just 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, and homeowners can quickly test for energized circuits and defective grounds on the factory floor, in the shop, or at home.


  • The 1AC-II continually tests its battery and its circuit integrity with a periodic double flash visual indication using Fluke VoltbeatTM technology.

  • The VoltAlertTM Tester (1AC-II and 1LAC-II) is a Category IV —1000 V overvoltage rated product for added user protection, the highest rated of its kind.

  • Voltage detection of 90 V to 1000 V ac or 200 V to 1000 V ac depending on model, as well as a 24 V to 1000 V ac control circuit model.

  • It  is rugged, reliable, and has a two-year warranty.


Operating principle

Senses 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.

Note: Does not respond to random electrostatic discharge.

Voltage sensing ranges

Nominally, 90 V AC to 1000 V AC or 200 V AC to 1000 V AC depending on model, 45 Hz to 405 Hz; also a 20 V to 90 V control circuit model


Detector tip style

Blade or round, depending on model


Light source

One high intensity red LED

Agency approvals/listings

c CSA us, CE, C-Tick


Safety rating
1000 V, CAT IV


IP rating
IP 40


Operating temperature range

-10 °C to 50 °C


Operating humidity ranges

0 % to 95 % (0 °C to 30 °C)

0 % to 75 % (30 °C to 40 °C)

0 % to 45 % (40 °C to 55 °C)


Operating altitude
3000 meters



2 AAA alkaline batteries included

Related standards and regulations for:



Europe and ROW: Low voltage directive and related stan­dards as: EN61010 respectively IEC61010 for international requirements



Europe and ROW: EMC direc­tive and related standards as: EN61326 respectively IEC61326 and their subset for ESD. Not all EMC standards are neces­sary due to no contact to mains voltage.



Especially in European markets with relations to WEEE and RoHs directive for the used ma­terials and information in the user documentation (manual).

Ordering Information


Fluke-1AC-A1-II ACV Detector 90-1000V, ENGL/LASPN/CFR Part Number 2432932

Fluke-1AC-A2-II ACV Detector 90-1000V, BRPORT/JAP/CHIN-T Part # 2432944

Fluke-1AC-E1-II ACV Detector 200-1000V, ENGL/GER/FREN/DUTCH Part # 2432967

Fluke-1AC-E2-II ACV Detector 200-1000V, DANSH/NORW/SWED Part # 2432971

Fluke-1AC-P1-II ACV Detector 200-1000V, KOR/THAI/SPANISH Part #2433000

Fluke-1LAC-A-II Low Voltage Detector 20-90 VAC AMERICAS PACIFIC Part # 2433021

FLK-1AC-A1-II-5PK Volt Alert, 5 Pack For USA Part # 2433042

FLK-1AC-E1-II-5PK Volt Alert, 5 Pack For EUROPE Part # 2433056

Fluke. Keeping your world up and running.®

Fluke Corporation

PO Box 9090, Everett, WA 98206 U.S.A.

Fluke Europe B.V.

PO Box 1186, 5602 BD

Eindhoven, The Netherlands

Modification of this document is not permitted without written permission from Fluke Corporation.


For more information call:

In the U.S.A. (800) 443-5853 or

Fax (425) 446-5116

In Europe/M-East/Africa +31 (0) 40 2675 200 or

Fax +31 (0) 40 2675 222

In Canada (800)-36-FLUKE or

Fax (905) 890-6866

From other countries +1 (425) 446-5500 or

Fax +1 (425) 446-5116

Web access: http://www.fluke.com

©2005-2009 Fluke Corporation.

Specifications subject to change without notice. Printed in U.S.A. 8/2009 2513868B D-US-N

© 2016 by Central Indiana NECA