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Internet #308822926

Model #ET40

Store SKU #1004537460

Store SO SKU #1004149217

Electronic AC/DC Voltage Tester

$1497
  • Tests voltages for AC at four useful levels: from 12V to 240V AC
  • Tests voltages for DC at 1.5V to 24V, at four useful levels
  • Identifies and distinguishes between AC or DC voltage
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Product Details

Klein Tools ET40 is an Electronic AC/DC Voltage Tester. It features indicators for positive and negative DC polarity, and tests DC voltages as low as 1.5V. It tests AC voltages 12-240VAC. Excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. It operates on 2 x AAA batteries.
  • Voltage Tester for AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltages
  • Tests DC voltages from 1.5-Volt to greater than 17-Volt to 24-Volt at four useful levels aligned with commonly used DC voltages
  • Bright LEDs illuminate to indicate the type and level of voltage detected
  • Built to withstand a 9.9 ft. (3 m) drop
  • Indicates polarity when measuring DC voltages
  • Powers off automatically after approximately 2-minutes of non-use to conserve battery life
  • CAT III 250-Volt, class 2, double insulation
  • Ingress protection IP41 dust and water resistant
  • Built-in test lead holders on sides of tester
  • Low battery indicator with easily accessible battery compartment
  • Pocket clip secures tester to pocket for reliable everyday carrying
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Specifications

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Questions & Answers

5Questions
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Q:Will test low voltage landscape lighting and wiring
by|Jul 7, 2022
1 Answer
Answer This Question

A:  The ET40 tests DC voltage as low as 1.5V and tests AC voltage 12-240VAC.

by|Jul 8, 2022
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    Q:Will this be able to test for an electrical current from driveway lights where the bulb socket is?
    by|Jun 9, 2022
    1 Answer
    Answer This Question

    A:  The ET40 can be used to test voltage in a light socket.

    by|Jun 9, 2022
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      Q:Would the Klein ET40 detect ghost/phantom voltage?
      by|Oct 2, 2021
      1 Answer
      Answer This Question

      A:  Yes, ghost voltage can impact most electrical testers/meters. The only way to get around ghost voltage is to get a meter with LoZ (low impedance) mode such as Klein Tools model # MM700, CL700, or CL800.

      by|Oct 5, 2021
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        Q:Will this work to test light switch wires?
        by|Aug 19, 2021
        1 Answer
        Answer This Question

        A:  Yes, the ET40 can test voltage on light switch wires.

        by|Aug 20, 2021
          Showing 1-4 of 5
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          Customer Reviews

          4.1 out of 5
          (195)
          • 4.1
            out of 195 reviews
          • 80%recommend this product
          Filter by:
          Showing 1-10 of 195 reviews
          Frankly, the very positive reviews are a curiosity to me. I suppose if all you want to do is ver...
          Frankly, the very positive reviews are a curiosity to me. I suppose if all you want to do is verify a live or dead circuit and/or confirm if line voltage is (roughly) 120 VAC or 240 VAC, then this tester would be adequate. However, you will not be able to determine the exact voltage--only the approximate. For example, let's say you have an AC generator and you want to know if it is putting out 110 votes or 130 volts, all you will see is a light indicating that you have 120V. I bought this as a gift for someone to check their 1.5 volt and 9 volt used batteries to determine if they still have a usable charge. Nearly depleted 1.5 volt batteries still happily light up the test light which suggests those batteries still have usable life. A true tester (aka meter) would tell you what the exact voltage is, not whether you are simply in the ballpark. You know if you are reading 1.4 volts or less that it is time to replace the 1.5V battery. In short, you can read the voltage label on the batteries and glean about as much information as the go/no go lights. Unless a battery is nearly dead this tester will indicate it is in good shape. For true diagnostics, you need a meter, not a series of on/off lights. It is misleading that it says it includes a low battery indicator. That indicator is for the internal tester batteries, not for what you want to check, and it only flashes if the internal batteries are low..
          by
            3 found this review helpful
            This Klein Voltage Tester is a very handy little tool to have in your electrical pouch. It is com...
            This Klein Voltage Tester is a very handy little tool to have in your electrical pouch. It is compact, is easy to read and convenient to handle. It fits in your shirt pocket for quick access. I like the slim design and the quality appears to be very good and rugged. The test leads are short and have caps which are handy when doing circuit board tests. Get one of these for your electrical kit.
            by
            • Recommended
            This Klein model ET 40 AC and DC voltage tester is very compact and easy to use. It has a hardwi...
            This Klein model ET 40 AC and DC voltage tester is very compact and easy to use. It has a hardwired set of 9 inch test leads (see picture) which will fit most any test situation. The leads tips store right in the sides of the tester (see picture), clipping right into the side of the tester. The tester can easily be stored in a small space or fit into your pocket or belt because the body of the tester is only 5 inches in length and it has a handy clip to secure the tester (see picture). It has fixed voltage ranges which will show an LED display when the voltage reaches that level (see picture) as opposed to a specific digital voltage readout value. For some DIY applications, this is just the right tool to use. It runs on two 1.5V AAA batteries, and the compartment they are in is secured by a screw so no worries about it all coming apart if dropped (see picture)! This is very a rugged tool. I highly recommend it for situations where you frequently work with certain voltage levels such as in power supply or automotive system testing (12V) as well as around the house with standard 120 or 240 volt lines.
            by
            • Recommended
            My husband and I have been shopping HD to replace...
            My husband and I have been shopping HD to replace items stolen from our storage lockers.. Todd and Amy (as well as others) at the Newark store have given us service above and beyond the norm. Excellent employees! Merry Christmas, See you again soon!
            by
            • Verified Purchase
            Quit working after first use. Changed batteries still just flashes....
            Quit working after first use. Changed batteries still just flashes.
            by
            • Verified Purchase
            by
            • Verified Purchase
            by
            • Verified Purchase
            Would not recommend
            I own a lot of Klein tools and this tester will not work on some outlets because the testing tips are to short
            by
              Very handy band affordable. Great buy!...
              Very handy band affordable. Great buy!
              by
              • Verified Purchase
              Most needed tool and good price....
              Most needed tool and good price.
              by
              • Verified Purchase
              Showing 1-10 of 195 reviews

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