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Extech

Extech EX350 True RMS Mini Multimeter, 12-Function, NCV, LOZ, LPF

  • Based on 92 reviews
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Availability: 14 left in stock
Fulfilled by Amazon
Arrives Monday, Oct 12
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Features

  • TRUE RMS PRECISION: Eliminate measurement errors on complex, noisy waveforms. This robust electrical tester delivers highly accurate True RMS readings for both AC voltage and current, ensuring flawless diagnostics on variable frequency drives.
  • INTEGRATED VOLTAGE DETECTION: Stay safe without carrying extra tools. The built-in non-contact voltage (NCV) sensor features a bright LED indicator, allowing you to quickly and safely verify live wires before beginning your troubleshooting.
  • LOW PASS FILTER TECHNOLOGY: Cut through the electrical noise effortlessly. The selectable Low Pass Filter (LPF) attenuates high frequencies to deliver precise, stable readings on noisy equipment like advanced industrial machinery and motors.
  • COMPACT JOB SITE READINESS: Take professional-grade testing anywhere. Measuring just 6.7 x 3.2 x 1.9 inches and weighing a comfortable 13.1 ounces, this 11-function handheld meter fits perfectly in your tool bag and includes premium test leads.

Description

The Extech EX350 is the ultimate diagnostic companion for electricians, HVAC technicians, and serious DIY enthusiasts who refuse to compromise on accuracy. As a True RMS digital multimeter, it excels where standard meters fail, providing precise measurements of non-linear signals often found in variable speed drives, LED lighting, and computer power supplies. With 11 distinct functions packed into one rugged, handheld frame, it streamlines your workflow by replacing multiple tools with one reliable device. Safety and efficiency are baked into every feature of the EX350. The integrated Non-Contact Voltage (NCV) detector allows for rapid safety checks, while the LoZ (Low Impedance) mode ensures that stray ghost voltages don't lead to false diagnoses. The large, 4000-count backlit LCD makes reading data effortless in cramped, dark electrical panels or bright outdoor environments. Whether you are verifying capacitance in a motor, testing a diode, or checking frequency on a generator, the EX350 delivers the laboratory-grade precision and field-tested durability that professionals demand. Complete with test leads and a 9V battery, it’s ready to tackle your most challenging electrical hurdles right out of the box.

Brand: Extech


Power Source: Battery Powered


Style: EX350


Color: Green


Item Weight: 13.12 ounces


Power Source: Battery Powered


Minimum Operating Voltage: 0.01 Millivolts


Measurement Type: Multimeter


Style Name: EX350


Color: Green


Item Weight: 13.12 ounces


Item Dimensions: 3.2 x 1.9 x 6.7 inches


Specification Met: CE, UL


Brand Name: Extech


Model: EX350


Unit Count: 1 Count


UPC: 733169194982 793950393505


Number of Items: 1


Item Highlight: AC/DC V/A, resistance, capacitance, frequency, Type K, 4000-count, NCV, LoZ, low pass filter, holster


Warranty Description: 3 years


Manufacturer: Extech


Global Trade Identification Number: 05


Included Components: Complete with test leads and two AA batteries


Part Number: EX350


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • It turns out to be a far superior product to the old EX330 line
I got this meter as a curiosity. It turns out to be a far superior product to the old EX330 line. Functionally it is very close to the Fluke 115 line, and is now built to a higher standard, including HRC fuses now (vs. glass fuses as earlier lines used). Reading accuracy is now much tighter. An EX330 might give a measurement within the spec, but still be quite poor. Use a 1.024V reference as a standard, and while the EX330 would measure 1.018 this EX350 now actually measures 1.024V. The inclusion of the RMS function is also of a good value. Unlike the 330, this meter does not include the thermocouple measurement option, however given the significant 'slack' of the 330's reading, it isn't a meaningful loss. Overall this is a great value meter and measures out fairly close to Fluke's 110 series of meters. ... show more
Reviewed in the United States on July 14, 2016 by David Hunter
    • Decent value but SLOW
I was looking for something with these features (specifically the low pass filter) but didn't need to be heavy duty. I love my Fluke meters but didn't want to spring for one this in particular application. The yellow meters that have comparable features to this aren't cheap. This meter seems to be accurate and easy to use, but my gripe is that it's just so slow. I'm not a professional electrician or any sort speed demon when it comes to electrical/electronics projects, but this thing is mildly frustrating with how long it takes to get a reading. Seems like anywhere between half a second to a second to register anything including when checking continuity. Having to wait literally half a second sounds petty when writing it out, especially as someone who only uses it occasionally, but when you're used to hearing a near instantaneous chime when there is continuity it bothers me way more than I would have thought. I have to be careful using it that I don't falsely believe a wire isn't live or assume that there is no continuity when in fact there is. If you don't take your time using this you could get on the wrong track with diagnoses or even put yourself in danger. The meter itself is not defective, unreliable or dangerous, but to use it safely and effectively you need to allow enough time for it to do its thing. I've purchased other Extech products that I'm very happy with. I like this meter but don't love it. It works for the features I got it for, but I still prefer my trusty 117 or 323 for the everyday stuff. ... show more
Reviewed in the United States on March 29, 2024 by K. Vernon
    • Very good multimeter!
Works well, is accurate, is easy to read, and has all the ranges I need. It replaced my faithful 25 yr old quality DMM which finally gave up, and it’s doing a great job.
Reviewed in the United States on November 8, 2023 by J
    • These are no Fluke but represent good value for money and are built better than your ...
These are no Fluke but represent good value for money and are built better than your average cheap meter. It gets 5 stars because I had an issue with the ACV function. With ACV selected the meter would continuously beep and change ranges. I followed the warranty instructions and today received a replacement meter from Flir Systems. I am based in New Zealand and the meter came via Fedex. Very good service. ... show more
Reviewed in the United States on October 17, 2017 by neill bryce
    • Nicer than I was expecting - works great so far
Purchased as an entry level DMM for myself, a beginner, I’m quite surprised at the quality. The way a couple reviewers described, I wasn’t expecting such a ruggedly constructed device. The plastic inner shell reminds me of the original handheld Magellan gps units - actually the whole design and materials are very similar and that was a great device. It should even be easy to polish eventual dulling and scratches out of the thick clear acrylic lens over the readout - just like that Magellan. So yeah, physically, it’s built way better than I anticipated. As for function, in the few things I’ve used it for so far it appears to be operating properly. Took a sec to realize that there’s a mode switch button beyond just the dial, but once I caught that, it made the rest of the device a bit more easy to understand. For the m ... show more
Reviewed in the United States on July 15, 2019 by aguadillano
    • Good buy for the Buck!
replaced a Fluke 117 with this, no problems.
Reviewed in the United States on April 3, 2019 by Amazon Customer
    • Over priced
User UN-friendly, loads of seldom used features . . . basically just another meter . . . nothing special . . . but fetching a high price. Wish hadn't bought it.
Reviewed in the United States on November 10, 2020 by lingcod9
    • Good meter, works well, accurate.
Just as good as the expensive digital meters I used to use in the lab as an electrical engineer, before I retired.
Reviewed in the United States on January 23, 2025 by Dave F

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