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Extech EX420 11 Function Professional MultiMeter

3.7 out of 5 stars 7 customer reviews

List Price: $74.99
Price: $61.76 & FREE Shipping. Details
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Only 6 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
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  • Averaging, autoranging DMM with large digit LCD display and temperature function
  • Averaging DMM with 11 functions and 0.3-percent basic accuracy
  • AC/DC voltage and current, resistance, capacitance, frequency, temperature, diode/continuity, duty cycle
  • Input fuse protection and mis-connection warning
  • 20A max current
12 new from $48.97 2 used from $30.00
$61.76 & FREE Shipping. Details Only 6 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Extech EX420 11 Function Professional MultiMeter
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  • Extech TL809 Electronic Test Lead Kit
Total price: $78.75
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Product Description

Style: Standard

What's Included: CAT III-1000 V test leads, tilt stand, Velcro® strap, holster with lead holder, bead wire temperature probe and 9V battery. Precision accuracy at an economical price True RMS AC voltage and AC current readings IR Thermometer with 8:1 distance to target ratio Audible and visual input alerts Frequency and capacitance capabilities Low current capability - measure down to 0.1 µA MAX (Model 450) function Easy access battery door Backlight Display IEC CAT III Safety Rating

Product Information

Style:Standard

Technical Details

Part Number EX420
Item Weight 1.4 pounds
Product Dimensions 3.2 x 2 x 7.4 inches
Item model number EX420
Batteries 1 Nonstandard Battery batteries required. (included)
Color Multicolor
Style Standard
Item Package Quantity 1
Number Of Pieces 1
Batteries Included? Yes
Batteries Required? Yes
Warranty Description 3 years

Additional Information

ASIN B0007SVV2Q
Customer Reviews
3.7 out of 5 stars 7 customer reviews

3.7 out of 5 stars
Best Sellers Rank #324,321 in Home Improvements (See top 100)
#348 in Automotive > Tools & Equipment > Diagnostic & Test Tools > Multimeters & Analyzers
Shipping Weight 1.4 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 19, 2003

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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From the Manufacturer


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style Name: Standard Verified Purchase
I received my EX-420 and never expected to receive such a great piece of test gear. I have over most of my life been a John Fluke or Techtronics gurue and only wanted this instrument to replace an old Fluke for my take and run electronics bag. Was I ever surprised at the quality and accuracy of all phases of this instrument. Wouldn't be a bit afraid to add it to my benchtop instrumentation. It far exceeded my wildest expectations. The Amazon seller who supplied this item was wonderful too with very fast shipment and I would rate them with a very +++AAA. Do't know why anyone would look no further.

Harold E King from Kentucky (yes we have running water & phone service here!)
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Style Name: Standard Verified Purchase
It seems well built, and professional. I haven`t spent as much time using it as yet, however the only issue which puzzled me, was trying to use the continuity function on it and it had a continuos beep when switched to the function (probes not touching). I tried several times and it eventually worked but I am not sure if its a glitch or I using incorrectly.
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The manufacturer commented on the review below
Style Name: Standard Verified Purchase
Unit defective out of the box. The continuity buzzer sounded like it had a short circuit. Sending this one back for replacement. I also (like other reviewer) was surprised the battery was installed and functional with no power blocking strip installed. No instructions on how to access battery compartment.

I was torn between spending a lot on a Fluke and this DMM, but decided I would never need the quality of the Fluke - hope I made the right decision and that the replacement unit will work OK.

I will edit this review when new meter received.

Edit Jan/2015: I received the replacement unit but it also had the same problem. On closer examination (not believing two consecutive could be bad) I inspected the leads. On the lead ends that connect to the meter there are factory installed plastic tips (not the protective caps). I suspected poor contact with the meter's female connections. I connected my old leads from the meter this Extech replaced and the problem was not there. I contacted Extech tech support and was told there was a protective coating on the tips to prevent corrosion in storage (why was this not noted in instructions). The tech suggested I clean the test side tips with acetone. After doing this the problem got better but the leads still do not perform as well as my old leads. I still suspect a problem with the male contacts not being spread enough for really good contact with the female plug in the meter.

Working now with Extech to see if I can fully resolve the issue to my satisfaction after Extech product support replied to my review - which shows good product service.

Edit Jan9/15: Just got an email response from Product Manager. We'll see what happens.

Edit Jan 23/15: Extech sent new leads which fixed the problem. So far customer service response has been good. I upgraded the number of stars to 4 and will reassess as I work with this meter.
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The manufacturer commented on this review(What's this?)
Hello Bill,
My apologies that you have had to deal with an out of box failure with an EX420. I understand the frustration that accompanies such an experience. Although I see you are waiting on a replacement, I am happy to arrange a tested unit for you. You can reach me at feedback@extech.com. Please let me know if there are any problems with the replacement unit that is on its way to you, and if I can assist further.

Best Regards,
Jamie Cohen
Product Support Manager
Extech Instruments
Style Name: Standard
Great meter for the money! It works without complaint, and does everything that I ask. This is my first real auto-ranging meter, coming from a world of Chinese cheap meters. My only real complaint (a minor one) is that the backlight is a little uneven. Other than that, this seems to be a meter that I can trust. The only thing that it is missing is the bar graph -- but you can find that in a higher-end model.
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