---
product_id: 1097642
title: "407730 Digital Sound Level Meter 40-130dB"
brand: "extech"
price: "6700467₫"
currency: VND
in_stock: true
reviews_count: 12
category: "Extech"
url: https://www.desertcart.vn/products/1097642-407730-digital-sound-level-meter-40-130db
store_origin: VN
region: Vietnam
---

# 0.1dB resolution 40-130dB range Fast analog bar graph 407730 Digital Sound Level Meter 40-130dB

**Brand:** extech
**Price:** 6700467₫
**Availability:** ✅ In Stock

## Summary

> 🔊 Stay ahead of noise—measure like a pro, wherever you go!

## Quick Answers

- **What is this?** 407730 Digital Sound Level Meter 40-130dB by extech
- **How much does it cost?** 6700467₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/1097642-407730-digital-sound-level-meter-40-130db)

## Best For

- extech enthusiasts

## Why This Product

- Trusted extech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Display Clarity:** Large LCD with 0.1dB digital readout plus fast-responding analog bar graph for instant trend spotting.
- • **Lightweight & Portable:** Compact 8.1 oz design fits in your hand for on-the-go noise monitoring anywhere.
- • **Smart Power Management:** Auto power-off extends battery life, powered by included 4 AAA batteries for uninterrupted use.
- • **Max Hold & Min Tracking:** Capture peak and minimum sound levels effortlessly to ensure compliance and safety.
- • **Precision Sound Monitoring:** Measures 40-130dB with ±2dB accuracy for reliable workplace noise assessment.

## Overview

The Extech 407730 Digital Sound Level Meter is a professional-grade noise measurement tool offering a 40-130dB range with ±2dB accuracy and 0.1dB resolution. Featuring a dual digital and analog display, max/min hold functions, and a lightweight design, it’s ideal for workplace noise monitoring, audio system checks, and compliance testing. Powered by 4 AAA batteries with auto power-off, it combines precision with portability for reliable sound level assessment.

## 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. desertcart.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 LevelsWherever 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 DisplaysThe 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 DesignThe 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 InformationAll 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 BoxMeter, microphone windscreen, four AAA batteries, and user manual. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Sound level meter measures from 40 to 130dB with an accuracy of 2dB. The digital display offers a 0.1dB resolution and features a fast responding analog bar graph. User can choose A or C weighting. Max Hold captures highest reading. Includes microphone wind screen and four AAA batteries. See more

Review: Accurate, and a great value! - 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.
Review: excellent decibel meter - outstanding and highly accurate decibel meter. Is a class 2 meter which is the meter class used by OSHA.

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000EWY67W |
| Batteries | 4 AAA batteries required. (included) |
| Best Sellers Rank | #64,005 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #26 in Sound & Noise Meters |
| Date First Available | March 8, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.1 ounces |
| Item model number | 407730 |
| Manufacturer | Extech Instruments |
| Product Dimensions | 9 x 1.7 x 2.2 inches |

## Product Details

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

## Images

![407730 Digital Sound Level Meter 40-130dB - Image 1](https://m.media-amazon.com/images/I/717vH6r1VdL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: What is frequency range for this device?**
A: The SL510 has a frequency range from 31.5Hz to 8KHz.

**Q: does make 20hz to 20khz readings?**
A: Thank you so much for your interest in our products. The 407032 model has a measurement bandwidth between 31.5Hz to 8KHz. Please check all the specifications of this meter here: http://www.extech.com/products/resources/407732_UM-en.pdf

**Q: what's in the box?**
A: Hello Checker,The 407760 comes with software, tripod, USB extension cable, windscreen, and 3.6-Volt Lithium battery.Best Regards

**Q: The model presented says 'Extech 407730' but in the description and image apears Extech 407732, which you are sending?**
A: I am not sure where 407730 is appearing besides the comparison table between the different models. For simplicity, this page is for the Extech 407732. You would get the item in the pictures.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Accurate, and a great value!
*by J***R on June 18, 2017*

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.

### ⭐⭐⭐⭐⭐ excellent decibel meter
*by J***S on November 15, 2025*

outstanding and highly accurate decibel meter. Is a class 2 meter which is the meter class used by OSHA.

### ⭐⭐⭐⭐⭐ Limited but good product
*by W***G on December 13, 2013*

So far this meter seems to be working alright enough. We have used this on numerous occasions: checking noise level of a window air conditioner to determine if there was any way to dampen the noise level via adding various barriers around window; checking noise level of mowers, tractor, and weed eaters - though we always wear some sort of protective ear gear (plugs or muffs). By measuring equipment we use /have on hand, this gives us a more realistic idea as to what level of noise reduction we want to target / pay for with future replacement or other "noise producing" equipment. I could use this in my business, as I believe the quality is sufficient for the purposes of a very "limited" sound survey.

## Frequently Bought Together

- Extech 407730 Digital Sound Level Meter 40-130dB
- Extech LT300 Light Meter

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-01*