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Product Specifications
Part Number 407730
ColorWhite
Batteries Included?Yes
Batteries Required?Yes
Item Dimensions
Length9 inches
Width1.70 inches
Height2.20 inches
Product Features
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Product Description
Amazon.com Product Description
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.
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 Fast-responding analog bar graph with 50 dB range shows trends. View larger. |
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.
 Included windscreen prevents distortion. |
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.
Product Description
Digital Sound Level Meter --- Analog bargraph with 50dB range updates every 40ms
Product Details
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Customer Reviews
Most Helpful Customer Reviews
84 of 84 people found the following review helpful
Amazon Verified 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.
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.
30 of 32 people found the following review helpful
I use this meter to take OSHA readings in our plant. It is great to show the workers how loud it actually is and helps them with wearing ear protection more consistent.
17 of 17 people found the following review helpful
Amazon Verified Purchase
I recently entered a contest sponsored by Lockheed Martin called Silent Stamina where the objective was to design and build a model airplane that would fly the longest time and not produce more than 60 db at full throttle.
This was the cheapest sound level meter I found with an accuracy of +/- 2%.
My meter read about 1.5db to 2db below the contest directors meter, close enough.
This was the cheapest sound level meter I found with an accuracy of +/- 2%.
My meter read about 1.5db to 2db below the contest directors meter, close enough.
Most Recent Customer Reviews
It hears sound!
I bought this for my 5.1 home theater system and it works great. I have used it to set the speaker levels on my own and others with good results. Read more
Published 28 days ago by Xboxer720
Nice for the Price
This a nice sound level for the price. I have been happy with it so far. I have used it on and off for the past few months. It is easy to use and read. Read more
Published 1 month ago by KelMay
Does what it says. Feels solid in your hand. Works very well.
Does what it says. Feels solid in your hand. Works very well. Good range of sensitivity. Easy to use. Good features.
Published 2 months ago by jwdonal
As expected
It works exactly as expected, but it is a bit bulkier than is probably necessary. It would be nice if there were a directional feature that could be toggled, so you could get a... Read more
Published 5 months ago by Bryan R. Shepard
Sound Meter
Easy to set up, works well. Was shipped promtly. Unit can be calibrated by Mfr if you need an official reading.
Published 10 months ago by H. Rosenberg
a bit too sensitive
The meter is easy to use and has a clear display, but it is so sensitive that even when a sound seems pretty consistent to a human ear, the readings go up and down dramatically.
Published 14 months ago by my-op
Unacceptable for serious work.
I have had to send two of these back for the same reason. When I returned the first one, the company said it must have been a defective unit, but the replacement one does the same... Read more
Published 14 months ago by Thomas R. Stone
Help save your hearing
I lost some of my hearing in the military, and my father did before me. Hearing loss is progressive, painless, and permanent. Read more
Published 17 months ago by Harkirtin McIver
perfect for my needs:
I have a car with very loud exhaust and I was worried about state inspection rules and the SCCA auto cross rules for loud exhaust. Read more
Published on February 27, 2010 by Karl Mckeever
Excellent Value
This is a nice little dB meter that was used in my daughter's science project. She did well. The ranges are broad enough to cover most applications. Read more
Published on January 19, 2009 by BlackCoffee
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