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Yellow rectangular digital multi-tester with LCD screen, test leads and receptacle cord

Klein Tools ET270 Auto-Ranging Digital Multi-Tester with GFCI Receptacle Tester

SKU CH-F34K-249E1

Auto-ranging digital multi-tester measures AC/DC voltage to 600V, resistance to 40MΩ, continuity, and battery condition while testing GFCI receptacle wiring faults and trip time with a backlit LCD

  • FeaturesDigital Multi-Tester DMM with Receptacle Tester, CSA, Hand_p
  • Height6.41 L x 3.13 W x 1.84 H inches
  • Width6.41 L x 3.13 W x 1.84 H inches
  • Length6.41 L x 3.13 W x 1.84 H inches
  • Weight0.56 pounds
  • Sports Team1 Piece
  • Measures AC/DC voltage up to 600V with auto-ranging convenience
  • Detects wiring faults in standard 120V and GFCI receptacles for safety
  • LCD displays GFCI trip time for quick troubleshooting
  • Tests 9V and 1.5V batteries plus identifies circuit breakers
  • Backlit display with test-lead holders and kickstand for hands-free use

ET270 Auto-Ranging Multi-Tester

The ET270 is an auto-ranging digital multi-tester that measures AC/DC voltage up to 600V and resistance up to 40MOhms. It adds audible continuity, battery test modes for 1.5V and 9V cells, and a dedicated GFCI receptacle test mode. The tool is built for electricians and technicians who need a single instrument for circuit verification and outlet safety checks.

Receptacle Cord And Test Leads Included

A receptacle test cord plugs directly into standard 120V and GFCI outlets to detect and identify common wiring faults. The LCD readout displays the trip time required to trip a GFCI device for quick troubleshooting. Right-angle test leads with CAT III/CAT IV safety caps store on the back of the meter, and a find mode helps trace a receptacle to its corresponding circuit breaker.

Check Your Work Environment First

The meter operates on 2 x AAA batteries, which are supplied in the box. A kickstand and test-lead holders support hands-free use, while an optional magnetic hanger (catalog numbers 69445 or 69417) is sold separately. Verify that the 120V GFCI test function matches the outlet standard in your region before ordering.

Highlights

  • Measures AC/DC voltage up to 600V with auto-ranging convenience
  • Detects wiring faults in standard 120V and GFCI receptacles for safety
  • LCD displays GFCI trip time for quick troubleshooting
  • Tests 9V and 1.5V batteries plus identifies circuit breakers
  • Backlit display with test-lead holders and kickstand for hands-free use

Specifications

BrandKLEIN TOOLS, Klein Tools
FeaturesDigital Multi-Tester DMM with Receptacle Tester, CSA, Hand_powered, true
Height6.41 L x 3.13 W x 1.84 H inches
Width6.41 L x 3.13 W x 1.84 H inches
Length6.41 L x 3.13 W x 1.84 H inches
Weight0.56 pounds
Sports Team1 Piece
TypeOhmmeter, Voltmeter

Questions about this item

How often do the two AAA batteries need replacing during regular use?

The meter ships with two AAA cells installed; battery life depends on how often the backlit display and continuity beeper are used, so keep spares in the carrying case for uninterrupted testing.

What is the highest voltage the ET270 can measure safely?

The auto-ranging digital multi-tester is rated for AC/DC voltage up to 600 V, which is the measurement limit that will be reached first during sustained high-voltage checks.

Does the backlit LCD or the GFCI trip-time function make the unit noticeably warm after hours of testing?

The ET270 draws very little current from its AAA supply, so neither the backlit display nor the GFCI trip-time measurement produces detectable heat during all-day operation.

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