Tools› Electrical and Electrical Testing Tools

Klein Tools

DIGITAL AC/DC VOLTAGE TESTER 12 TO 240V AC 1.5 TO 24V DC

$42.16

SKU: K02A ET40

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item

Description

The Klein Tools ET40 is a digital AC/DC voltage tester designed for electronic voltage testing. It measures AC voltages from 12V to 240V and DC voltages from 1.5V up to 24V. The tester also indicates positive and negative DC polarity. It features bright LED indicators for voltage levels and polarity, a built-in test lead holder, and automatic power-off after two minutes of non-use.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKlein Tools
Part NumberK02A ET40

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy