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Internet # 325798512

Model # ET270

Store SKU # 1009729148

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Digital Multi-Tester with Receptacle Tester (Standard/GFCI), Auto-Ranging Digital Multimeter

$69.97
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  • Auto-range multimeter for 600V AC/DC and 40M Ohms resistance
  • Receptacle tester detects wiring faults and identifies breakers
  • Evaluates GFCI outlets, including time-to-trip functionality
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Product Details

About This Product

Klein Tools' ET270 is an auto-ranging digital multi-tester that measures AC/DC voltage, resistance, continuity, and performs a battery test. It also tests wiring conditions in standard 120VAC and GFCI electrical receptacles and inspects North American GFCI devices. Comes with Right-Angle Test Leads, Receptacle Test Cord, Instructions, and all required batteries.

Highlights

  • Digital multimeter is auto-ranging and measures AC/DC voltage, resistance, audible continuity, and performs 9V and 1.5V battery tests
  • Detects and identifies common wiring faults in standard and GFCI electrical outlets
  • Inspects GFCI devices, including time to trip the device
  • Find mode indicates which breaker corresponds to a given receptacle
  • Features include backlit display, data hold, default to auto-range with option for manual-range; max/min
  • Receptacle test is designed for use with North American 120-Volt AC 3-wire electrical outlets
  • Built to withstand a 6.6-Foot (2 m) drop, this meter is designed to be durable and reliable even in demanding working environments
  • Digital Multimeter comes with test leads, receptacle test cord, instructions, batteries, all in a convenient storage pouch
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Product Information

Internet # 325798512

Model # ET270

Store SKU # 1009729148

Specifications

Dimensions

Product Depth (in.)

1.825 in

Product Width (in.)

3.125 in

Details

Accuracy Measurement

Non-RMS

Category Rating

III

Features

Interchangeable Leads

Functions Measured

Battery, Continuity, Resistance, Voltage

Included

Batteries, Case, Test Leads

Maximum AC Current (A)

0

Maximum AC Voltage

120

Maximum DC Voltage

600

Maximum Frequency (MHz)

0

Maximum Resistance (ohms)

40M

Number of Functions

7

Power Source

Battery Operated

Range

Auto Ranging

Returnable

90-Day

Warranty / Certifications

Certifications and Listings

CSA Certified

Manufacturer Warranty

Please refer to the attached warranty document in the Product Details section above under Additional Resources From the Manufacturer.

Questions & Answers

Where is it made?
ByJul 23, 2026
1 Answer | 
Answer This Question

The country of origin for the Klein Tools Cat. No. ET270, Auto-Ranging Digital Multi-Tester with Standard/GFCI Receptacle Tester, is Vietnam.

By|Jul 26, 2026


    Does this have a breaker finder?
    ByDec 22, 2025
    2 Answers | 
    Answer This Question

    Sorta, It has a breaker finder function with an audible tone setting. This will require manually flipping off the breakers until you find the correct one.

    By|Jan 25, 2026

      Klein Tools Cat. No. ET270 Auto-Ranging Digital Multi-Tedter with Standard/GFCI Receptacle Tester does not include a Circuit Breaker Finder. We recommend the Klein Tools Cat. No. ET310 Digital Circuit Breaker Finder with GFCI Outlet Tester for this functionality.

      By|Dec 22, 2025


        how long are the leads?
        ByNov 3, 2025
        1 Answer | 
        Answer This Question

        The test leads found in Klein Tools Cat. No. ET270, Auto-Ranging Digital Multi-Tester with Standard/GFCI Receptacle Tester, are approximately 41 in. long.

        By|Dec 7, 2025

          (1)

          Description specs show "Find mode indicates which breaker corresponds to a given receptacle. Does it give the breaker number? Picture shows it plugged into the wall unit. ET 310 has trans/rec for this test, how does the ET270 do this?
          ByApr 5, 2025
          1 Answer | 
          Answer This Question

          Please see the Instructions/Assembly document under Additional Resources From the Manufacturer. The FIND function is used to indicate which breaker corresponds to a given receptacle: 1. While in Receptacle Test mode and with the Receptacle Test Cord inserted into the receptacle to be located, press the “RANGE/FIND” Button. NOTE: the FIND function cannot be used if the wiring condition of the circuit is "Open Hot". 2. The tester will emit a warble tone while the receptacle is energized. Begin turning off breakers at the panel one by one. 3. When the breaker for that receptacle is turned off, the warble tone will stop, and the Indicator LED will flash ten times. 4. After the ten flashes, the tester will automatically exit the FIND function. To exit the FIND function manually, press the “RANGE/FIND” Button

          By|Aug 29, 2026

            (1)

            Can this be used to test voltage on an automotive battery?
            ByFeb 12, 2025
            1 Answer | 
            Answer This Question

            The ET270 can measure voltage on an automotive battery

            By|Oct 11, 2026

              (1)

              Does this multimeter have micro ferrieds or check capacitance ?
              ByJul 20, 2024
              1 Answer | 
              Answer This Question

              No. For the full meter specs please see the Instructions/Assembly document under Additional Resources From the Manufacturer

              By|Jul 22, 2024


                Does this work on ac/DC
                ByJan 28, 2024
                1 Answer | 
                Answer This Question

                Klein Tools' ET270 is an auto-ranging digital multi-tester that measures AC/DC voltage, resistance, continuity, and performs a battery test. It also tests wiring conditions in standard 120VAC and GFCI electrical receptacles and inspects North American GFCI devices.

                By|Jan 29, 2024


                  Can this multimeter be used to measure milliamps in automotive systems?
                  ByJan 17, 2024
                  1 Answer | 
                  Answer This Question

                  The ET270 Tester does not measure milliamps

                  By|Jan 18, 2024


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                    Customer Reviews

                    4.7 out of 5

                    • 4.7 out of 110 reviews
                    • 100% recommend this product
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                    Showing 1-10 of 110 reviews
                    Good tool
                    Great tool but how do I get a spare outlet tester wire
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                      • Recommended
                      Really like this meter loud tone, easy read display good for testing switches, open and closed switches.
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                      Helped out on finding a dead circuit in my trailer and a dead fuse in my SUV. Worked great!!!
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                      • Verified Purchase
                      Yes it did give it also got the breaker finder with gfci thought was suppose to have,screw into light fixture attachment but it didnt
                      by
                      • Verified Purchase
                      Absolutely perfect, And gives me the advantage of testing any other outlets in the house for fault
                      by
                      • Verified Purchase
                      Showing 1-10 of 110 reviews

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                      Product Snapshot

                      Ideal for homeowners and professionals, ensuring accurate electrical testing and GFCI inspection.
                      Ideal for technicians and homeowners, ensuring accurate electrical troubleshooting and maintenance.
                      Ideal for electricians needing accurate, auto-ranging measurements with temperature and backlit display.
                      Ideal for professionals needing accurate, safe measurements with auto-ranging and data logging.

                      True RMS (TRMS) Measurement

                      Auto-Ranging

                      Temperature Measurement

                      Backlit Display

                      Measurement Functions

                      AC/DC voltage, resistance, continuity, battery tests
                      Amperage, Battery, Continuity, Resistance, Voltage
                      Capacitance, frequency, duty-cycle, diodes
                      capacitance, frequency, duty-cycle, voltage, current, resistance