Klein Tools ET40 Digital AC/DC...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$78.16
$28.16
Klein Tools ET40 Digital AC/DC Voltage Tester 12 to 240V AC, 1.5 to 24V DC

Klein Tools ET40 Digital AC/DC Voltage Tester 12 to 240V AC, 1.5 to 24V DC

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Model: ET40
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$78.16
$28.16
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Digital AC/DC Voltage Tester 12 to 240V AC, 1.5 to 24V DC

  • Warnings

    • Usage of this tester in any way other than that specified by the manufacturer can impair safe operation, resulting in severe injury or death.
    • Read, understand, and follow all instructions, cautions and warnings attached to and/or packed with all test and measurement devices before each use.
    • Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
    • Never use the tester on a circuit with voltages that exceed the category based rating of this tester.
    • Before each use, verify tester operation by measuring a known voltage.

  • Features

    • CATIII 250V, Class 2, Double insulation
    • Indicates polarity when measuring DC voltages
    • Built to withstand a 9.8-Foot (3 m) drop
    • Ingress protection IP41 dust and water resistant
    • Powers off automatically after approximately 2 minutes of non-use to conserve battery life
    • Built-in test lead holders on sides of tester
    • Identifies and distinguishes between AC or DC voltage
    • Bright LEDs illuminate to indicate the type and level of voltage detected
    • Uses 2 x AAA batteries (included)
    • Voltage Tester for AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltages
    • Low battery indicator with easily accessible battery compartment
    • Tests DC voltages from 1.5V to greater than 17 to 24V at four useful levels aligned with commonly used DC voltages
    • Pocket clip secures tester to pocket for reliable everyday carrying
    • DC Polarity Indicators for DC Positive, DC Negative, and Both Illuminated for AC. Tests Low DC Voltage to 1.5V. Built in Test Lead Holders on Sides of Tester.


ET40 - spec sheet

Manufacturer Resources

Product Specs

Accessories:
5139C, 5139PAD
Accuracy:
Approximately 70 to 100% of Indicated Voltage, Except for 2V DC (84 to 100%) and >17V DC (94 to 100% of 17V)
Batteries:
2 x AAA
Case Included:
No
Control Type:
ON/Off Switch for Power ON/OFF
Display:
Analog LED
Drop Protection:
9.8' (3 m)
Frequency:
50/60 Hz
Ingress Protection:
IP41
Integral Lead Storage:
Yes
Interchangeable Leads:
No
Item Depth:
5.2400 in
Item Height:
1.1100 in
Item Weight:
0.2680 lbs
Item Width:
1.5200 in
Lead Length:
9" (22.9 cm)
Overall Height:
1.52" (3.9 cm)
Overall Length:
5.24" (13.3 cm)
Overall Width:
1.11" (2.8 cm)
Pollution Degree:
2
Standard:
CATIII 250V, CE
Tests Continuity:
No
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Electrical Testers
Product Voltage:
AC Level Indicators - 12V, 24V, 120V, 240V and DC Indicators -1.5V, 9V, 12V, >17-24V
Product Material:
Plastic Housing, PCB with Electronic Components
Product Weight:
2.3 oz (66 g)

Klein Tools ET40 – Frequently Asked Questions

How fast can I get the Klein Tools ET40 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools ET40 come with a warranty?
Absolutely. The Klein Tools ET40 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools ET40?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools ET40 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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