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Extech 407730 Digital Sound Level Meter 40-130dB, White

4.4 4.4 out of 5 stars 321 ratings
$84.99 with 6 percent savings
List Price: $89.99

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Digital Sound Level Meter
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Purchase options and add-ons

Brand Extech
Style Digital Sound Level Meter
Color White
Voltage 9 Volts
Amperage 300 Milliamps

About this item

  • Measures 40 to 130dB on digital display
  • 2dB accuracy with 0.1dB resolution
  • Fast responding analog bar graph
  • Records Max/Min values over time
  • Auto power off and Max Hold function

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 9 x 1.7 x 2.2 inches; 8.11 ounces
  • Item model number ‏ : ‎ 407730
  • Batteries ‏ : ‎ 4 AAA batteries required. (included)
  • Date First Available ‏ : ‎ March 8, 2006
  • Manufacturer ‏ : ‎ Extech Instruments
  • ASIN ‏ : ‎ B000EWY67W
  • Country of Origin ‏ : ‎ China
  • Customer Reviews:
    4.4 4.4 out of 5 stars 321 ratings

Product Description

Product Description

Economical meter measures sound decibel levels for a variety of workplace situations including workplace machinery monitoring and audio/alarm system checks. Meter features a 40 to 130 dB adjustable measuring range with selectable A/C weighting and fast/slow response. Digital display includes 0.1 dB resolution plus analog bar graph for easy readability. MAX Hold function stores loudest dB level reached and auto power off conserves battery life over time. Features a digital display with a user-friendly analog bar graph.

Amazon.com

Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.

Accurately Measures Sound Levels
Wherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. User-friendly settings allow you to choose between either A or C weighting. The unit also mounts on a tripod, providing convenient hands-free readings.

Large LCD Screen with Dual Reading Displays
The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.

Compact, Lightweight Design
The Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons. Useful features include auto power-off, max hold functions, and fast/slow response time.

Product and Warranty Information
All of Extech's assessment tools are factory calibrated to specifications and work to spec. You can also add an NIST calibration certificate for audits if necessary for licensed testing. The meter measures 9 by 2-1/5 by 1-7/10 inches (H x W x D), and uses four AAA batteries.

The Extech Digital Sound Level Meter is backed by a manufacturer's one-year limited warranty on parts and labor.

What's in the Box
Meter, microphone windscreen, four AAA batteries, and user manual.


From the manufacturer

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Kit Includes:
  • Extech 407730 Digital Sound Level Meter.
  • Microphone Windscreen.
  • 4 AAA Batteries.
  • User manual.

Extech Type 2 35 Decibel to 130 Decibel Digital Sound Level Meter

Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.

  • Records sound levels from 40 to 130 decibels
  • Precise readings with +/-2 dB accuracy and 0.1 dB resolution
  • Dimensions: 9 x 2.2 x 1.7” (230 x 57 x 44mm)
  • Weight: 5.6oz (160g)
  • One-year limited warranty on parts and labor

Professional Digital Sound Level Meter

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sound meter, db meter, sound measurement, sound tester, db meter, noise meter, db measurement

Accurately Measures Sound Levels

Wherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. The unit also mounts on a tripod, providing convenient hands-free readings.

Large LCD Screen with Dual Reading Displays

The large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.

Compact, Lightweight Design

The Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons.

User-friendly Settings

Choose between either A or C weighting, auto or manual ranging. Other useful features include auto power-off, max hold functions, and fast/slow response time. Record sound values over time to track sound changes.

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407730 407732 407736
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Customer Reviews
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—
—
Price — — —
Display 2000 count LCD 4000 count LCD 407736 3-1/2 digit, 2000 count LCD
Measurement Bandwith 300Hz to 8KHz 31.5Hz to 8KHz 31.5Hz to 8KHz
Dynamic Range N/A 65dB 55dB
Measurement Range 40 to 130dB (A wtg), 45 to 130dB (C wtg) 35 to 130dB (Low: 35 to 100; High: 65 to 130dB) 35 to 130dB (Low: 35 to 100; High: 65 to 130dB)
Frequency Weighting ‘A’ and ‘C’ (selectable) ‘A’ and ‘C’ (selectable) ‘A’ and ‘C’ (selectable)
Accuracy ± 2dB ± 1.5dB ± 1.5dB
Resolution ± 0.1dB ± 0.1dB ± 0.1dB
Condenser Microphone 0.5" (12.7mm) 0.5" (12.7mm) 0.5" (12.7mm)
Dimensions 9 x 2.2 x 1.7” (230 x 57 x 44mm) 8.2 x 2.1 x 1.25"(210 x 55 x 32mm) 9.45 x 2.68 x 1" (240 x 68 x 25mm)
Weight 5.6oz (160g) 8.1oz (230g) 6.75oz (210g)

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
321 global ratings

Customers say

Customers like the sound level meter for its easy-to-use and accurate measurements. They say it's a great tool for testing occupational sound levels and machinery near personnel. They appreciate the value for money and the clear written instructions. Customers also like the features, and quality of the product. However, some customers disagree on performance.

AI-generated from the text of customer reviews

49 customers mention39 positive10 negative

Customers like the quality of the guitar effect device. They mention that it works well, is of good quality, and is sufficient for the purposes of a very professional meter. Some say that the meter is well made and consistent between tests.

"...this meter is a very accurate CLASS 2 meter, a CLASS 1 is better but costs $700+ dollars...." Read more

"...So in a static situation the meter is very accurate...." Read more

"...Also, the "Max Hold" function is great; it keeps the highest rating on the display so if you mount the meter remotely, you can still see what it..." Read more

"...There's a lot of buttons I probably won't use, honestly, but this is well made...." Read more

43 customers mention38 positive5 negative

Customers find the precision measuring tool easy to use. They say it works excellent, has a straightforward operation, and is sensitive enough to work well.

"...It's not at all expensive, is easy to use, and seems to work correctly...." Read more

"This Extech 407730 decibel sound meter is easy to use right out of the box and it works very well...." Read more

"...It's a "nice blend of not too sensitive and sensitive enough to work well"...." Read more

"...This well designed and user friendly device makes channel level balancing even more accurate and is most helpful when measuring surround speakers...." Read more

30 customers mention26 positive4 negative

Customers like the value of the sound meter. They mention it's a good investment, impressive for an inexpensive meter, and a great buy.

"...It's not at all expensive, is easy to use, and seems to work correctly...." Read more

"...Great buy!" Read more

"...Lose it and you'll find out. This device is cheap by comparison." Read more

"...Very happy with it for the cost." Read more

19 customers mention14 positive5 negative

Customers generally like the measurement of the guitar effect device. They say it's a very good sound level meter, great for testing occupational sound levels and machinery near personnel, and easy to read. The sound level measurements are displayed in digital form, making it easy to make sound level adjustments. The MAX function allows you to catch peak impact noises, isolating them from the basic noise. Overall, most are happy with the product's measurement.

"...For quick estimates of sound volume (for unofficial purposes, I'm not sure how well calibrated this is) or for comparing two sources to see if they..." Read more

"...Sound level measurements are displayed in digital form and the meter is easily managed with one hand making sound level adjustments that much easier..." Read more

"...Buyer beware: this is not a spec'd sound level meter...." Read more

"...The MAX function allows you to catch peak impact noises, isolating them from the basic noise levels of the test area...." Read more

12 customers mention12 positive0 negative

Customers are satisfied with the features of the guitar effect device. For example, they mention it's a great tool, perfect for their needs, and has powerful features. Some say it'll be a good addition to their tool box. Overall, most are happy with the product's functionality.

"...I exchanged it with no effort and the new unit works as expected. Handy lil guy and smaller than I expected (9"'s long)...." Read more

"...As an ANSI Class 2 device, it can be used professionally and its microphone will fit conventional calibrators to verify accuracy...." Read more

"...Very good meter, reasonable price. Good addition to my tool box. later" Read more

"Office use was good." Read more

11 customers mention8 positive3 negative

Customers find the readability of the precision measuring device to be easy. They mention that the instructions are simple and easy to understand. They also appreciate the large, easy to read display. The product is described well and works well. However, some customers feel the user interface is not intuitive.

"...The display is easy to read (not sure if it has a light, I only used it during the day)...." Read more

"Easy to read. Bit sensitive to varying sounds." Read more

"...Perhaps due to interrupt during data downloading, the data logger could not be recognized by PC any more...." Read more

"...The owners manual is adequate, but the user interface is not intuitive, so keep the manual with the tool, as you will need it again if you have not..." Read more

33 customers mention20 positive13 negative

Customers are mixed about the performance of the precision measuring device. Some mention that it works well, easy to use, and helps solve a lot of noise issues, while others say that it does not work properly, does not have an output to transmit the signals to computer, and does not satisfy their requirements. Some say that the MIN/MAX function does not operate properly and that it has little to no response for dBA weighting.

"...It has A and C weighting, and I used C as recommended. It worked great for this without needing to understand anything, right out of the box...." Read more

"...a dedicated sound meter to free up my phone but this thing is too worthless to use. And now I’m past the 30 return period...." Read more

"these work great when you don’t get a bad one. Mine looked used before.I returned it.As for the unit itself...." Read more

"Works great for what I need. Does A and C weighting. Seems to be accurate enough for non scientific use...." Read more

Failed Calibration!
1 Star
Failed Calibration!
I received this order in a timely manner- shopping and shipping was great. As soon as we received it, I sent it in to our NIST metrology lab for calibration and to confirm that it was performing to manufacturer's specifications.It FAILED calibration even thought it was brand new. Amazon is willing to do a partial refund, but because it's past the 30-day window it won't be a full refund. With the delay for getting it calibrated you're almost guaranteed to go past the 30 days, which is a real bummer when you consider it is new-in-box and failed.
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Top reviews from the United States

James B.
5.0 out of 5 stars incredible meter
Reviewed in the United States on December 22, 2020
Style: Sound Level MeterVerified Purchase
I got this a few days ago and its an incredible meter. first, it uses the much cheaper AAA batteries vs the expensive 9 volt batteries. I have a callibrator and it measured right on when I got it. the instruction manual doesnt tell how to calibrate it but the online manuael at extech does show you how. this meter is a very accurate CLASS 2 meter, a CLASS 1 is better but costs $700+ dollars. this meter can be used in court procedings and government monitering. a UNCLASSIFIED meter that costs under $100 or so is not nearly as accurate as a class 1 or class 2. ( class 1 & 2 is slightly better meters than TYPE 1 and 2 meters). this meter does A and C weighting, peak measurments, and max and minimum measurements over time. the ONLY thing I dont like? its only backlit for 10 seconds after pushing the button. for $126 for a class 2 meter from a top company like extech its the best sound level meter you will find. spend the $126 on this meter plus a $110-$150 for a class 1 calibrator like I bought on amazon and you will be set for years of accurate sound level measurements. dont bother with the $20-$80 meters if you want true readings.
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J. Foster
5.0 out of 5 stars Accurate, and a great value!
Reviewed in the United States on June 18, 2017
Style: Digital Sound Level MeterVerified Purchase
I have an older DB meter that does straight readings. I was looking for something that I could use for averaging and finding peak volumes so I gave this a try. It's not at all expensive, is easy to use, and seems to work correctly. I have a high end calibrated source for my older meter, and when I tried it on the Extech it read exactly the correct value. So in a static situation the meter is very accurate. While I don't have any way to test it for peak or average readings, I'm guessing that it's probably pretty darn close. I plan on using this for measuring shop machine noise levels, and also for monitoring sound levels for the PA for a jazz band I play in. If you need a DB meter, this one will do a good job at a great price.
One person found this helpful
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Pard
4.0 out of 5 stars Easy to Use Decibel Sound Meter
Reviewed in the United States on August 29, 2008
Style: Digital Sound Level MeterVerified Purchase
This Extech 407730 decibel sound meter is easy to use right out of the box and it works very well. The instructions are simple and easy to understand and everything worked as expected. I had never owned or used a sound meter before, so I wasn't sure what to expect, and someone told me it can be complicated, but it's "So simple a child could do it", to quote Dr. Leonard "Bones" McCoy from the original Star Trek (Spock's Brain episode)!

Having both the "A" and "C" ratings available to use is a good thing -- make sure you know which one you should use for your particular application (I did some basic web research to learn more). It measures 40 dB to 130 dB, and I was surprised to find that 43 dB is about my basic background noise in my yard, no wind but birds chirping.

Also, the "Max Hold" function is great; it keeps the highest rating on the display so if you mount the meter remotely, you can still see what it recorded.

I mounted it on a basic camera tripod and it worked fine. It actually has a metal tripod mounting thread, unlike some (expensive) digital cameras that use plastic.

The only nits I can pick are: 1) The little foam wind sock that sticks over the end is pretty flimsy and it comes off too easily, but not a biggie; and 2) The battery cover is attached with a tiny Phillips head screw, rather than having a cover that simply snaps on. So you'll need to find a very small #3 Phillips head screwdriver just to remove the batteries, and let's hope you don't have to do this at night or in the bush.

It seems well made for what it is -- basic plastic case and slightly mushy rubberized push buttons. The display is easy to read (not sure if it has a light, I only used it during the day).

Once you familiarize yourself with the instructions, you pretty much don't have to bother with them again, it's that easy to use. The batteries are the el cheapo type that probably have about 25% of the lifespan of a good pair, but otherwise, this is a very nice unit that's probably way overkill for just recording the neighbor's late night parties. I used it for a basic scientific research project and published the results and it worked fine for that.
134 people found this helpful
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M. Johnson
5.0 out of 5 stars Show Your Spouse They Are Louder Than the Stereo They Are Complaining About
Reviewed in the United States on January 17, 2015
Style: Digital Sound Level MeterVerified Purchase
I picked up one of these to help level match my subwoofer to my main stereo system. It has A and C weighting, and I used C as recommended. It worked great for this without needing to understand anything, right out of the box. I also used it to see if the level on the noise machine in my nursery was in the safe range, and adjusted it a little. There's a lot of buttons I probably won't use, honestly, but this is well made. It comes with a wind foam shield which you can use for outside applications. For quick estimates of sound volume (for unofficial purposes, I'm not sure how well calibrated this is) or for comparing two sources to see if they are the same, this is the right tool.

I also used this to point out to my wife that the home theater stereo wasn't too loud to do hearing damage. I then pointed out that her yelling at me at how loud the stereo was actually WAS loud enough to do hearing damage (90db!) and that she should probably volume down. Yeah, that didn't go over so well. I don't recommend using this for spouse volume testing. But for stereo equipment matching, oh yeah, it rocks for that.
51 people found this helpful
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Heather S.
5.0 out of 5 stars His New Favorite Toy
Reviewed in the United States on September 7, 2013
Style: Digital Sound Level MeterVerified Purchase
I purchased this as a gift for an engineer, knowing how much he likes data. He LOVES it.
If you purchase it new in packaging, it comes with batteries, which was a nice bonus, and the windscreen does help when you're in an area with gusting a/c or things moving. He did say that it might read just a tiny bit high, but not so much that you can't get accurate readings. He's been playing with it all week testing everything from car highway noise to heavy duty machinery at work and has found that it reads quickly, accurately and the memory function is quite useful. It's a "nice blend of not too sensitive and sensitive enough to work well".
I would highly recommend the meter, considering how much fun he's had with it. Great buy!
2 people found this helpful
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Top reviews from other countries

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Rosa Elia
3.0 out of 5 stars Sonómetro Extech
Reviewed in Mexico on November 16, 2023
Style: Sound Level Meter/DataloggerVerified Purchase
El instrumento llego antes de lo esperado eso estuvo excelente.
Hablando del instrumento, llego muy bien empacado el único detalle es que no traía protector la pantalla y estaba un poco rayada.
De ahí en fuera coincide con el instrumento descrito en la publicación.
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Rosa Elia
3.0 out of 5 stars Sonómetro Extech
Reviewed in Mexico on November 16, 2023
El instrumento llego antes de lo esperado eso estuvo excelente.
Hablando del instrumento, llego muy bien empacado el único detalle es que no traía protector la pantalla y estaba un poco rayada.
De ahí en fuera coincide con el instrumento descrito en la publicación.
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GV
4.0 out of 5 stars Schallpegelmessgerät
Reviewed in Germany on March 30, 2023
Style: Sound Level MeterVerified Purchase
preis leistung ist in ortnung
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Rod Sheridan
5.0 out of 5 stars Works well
Reviewed in Canada on January 27, 2021
Style: Digital Sound Level MeterVerified Purchase
I purchased this meter because it has both an “A” and “C” weighting response ( I needed the C weighting}.

The meter works well and the display is easy to read.
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ian
5.0 out of 5 stars Speakers sound better after using this
Reviewed in the United Kingdom on August 24, 2021
Style: Digital Sound Level MeterVerified Purchase
Has made my movie listening far better after using this to dial in my 5.1.4 Atmos setup
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Brad
1.0 out of 5 stars Doesn't work.
Reviewed in Canada on August 7, 2019
Style: USB Sound Level DataloggerVerified Purchase
Piece of crap. It records data nicely but I'm showing a flat line. I've got another decibel meter that seems to work fine, when I used the Extech even in real time it picked up no sounds. Useless to me. I'll be returning it.
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