---
product_id: 15572367
title: "Extech 407750 Sound Level Meter with Background Sound Absorber"
brand: "extech"
price: "S/.2284"
currency: PEN
in_stock: true
reviews_count: 5
url: https://www.desertcart.pe/products/15572367-extech-407750-sound-level-meter-with-background-sound-absorber
store_origin: PE
region: Peru
---

# RS232 PC interface for seamless data capture Measures 30-130 dB with ±1.5 dB accuracy Built-in background noise absorber for precise readings Extech 407750 Sound Level Meter with Background Sound Absorber

**Brand:** extech
**Price:** S/.2284
**Availability:** ✅ In Stock

## Summary

> 🔊 Measure Smarter, Work Louder — Stay Ahead of Noise Pollution!

## Quick Answers

- **What is this?** Extech 407750 Sound Level Meter with Background Sound Absorber by extech
- **How much does it cost?** S/.2284 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/15572367-extech-407750-sound-level-meter-with-background-sound-absorber)

## 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

- • **Data at Your Fingertips:** RS232 interface enables direct PC data logging and analysis
- • **Ready for Any Environment:** Backlit display and data hold function ensure usability in dim or dynamic settings
- • **Complete Kit for On-the-Go:** Includes microphone windscreen, batteries, carrying case, and user manual for instant deployment
- • **Noise Filtering Like a Pro:** Background sound absorber isolates machine noise for crystal-clear measurements
- • **Precision Meets Professional Standards:** ANSI & IEC 651 Type 2 certified for workplace noise compliance

## Overview

The Extech 407750 Sound Level Meter is a professional-grade Type 2 device designed for accurate workplace noise surveys and compliance. It measures sound levels from 30 to 130 dB with ±1.5 dB accuracy, featuring a unique background noise absorber to filter ambient sounds. Equipped with a backlit display, data hold, Min/Max functions, and an RS232 interface for PC connectivity, it’s the ultimate tool for managers and professionals ensuring safe and compliant sound environments.

## Description

View largerSound Level Meter with PC Interface and Background Noise FilterSound Level Meter meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems, and enforcing noise ordinances. Measures from 30 to 130 dB in two ranges and has an accuracy of ±1.5 dB. The built-in background noise absorber for machine noise measurements filters ambient noise for more accurate readings. Data hold and Min/Max functions. Backlit display allows use in dimly lit areas. The meter also has an RS232 interface for capturing data directly to your PC using optional Windows compatible software (407752). Complete with microphone windscreen, 9-volt battery, carrying case, and user manual. Model 407732-NIST is also available with a Certificate of Calibration traceable to NIST.What is a Sound Level Meter?Sound level meters are instruments designed to respond to noise much like the human ear. The measurements taken by sound level meters are compared to known standards to determine if the noise level could have a detrimental effect on human hearing.Types of Sound Level MetersType 3 — Low cost models for basic sound checks.Type 2 — Models that meet OSHA and other ordinance testing requirements.Type 1 — Precision for lab testing (Extech doesn't have one).Dosimeters — Measure work noise exposure according to OSHA.Analyzer — analyzes noise in narrow bands.  More Extech Instruments to Choose FromView larger407730 Sound Level MeterRecords sound levels from 40 to 130 decibels with ±2 dB accuracy and 0.1 dB resolution. It features a large, 2000 count LCD display with a fast responding analog bargraph for viewing trend. Additional features include: Min/Max, Max Hold, Auto Power off, and an analog AC output for connection to chart recorders and dataloggers. Comes with microphone windscreen, four AAA batteries, and user manual.View larger407732 Type 2 Sound MeterSound Level Meter meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems, and enforcing noise ordinances. Measures from 35 to 130 dB in two ranges and has an accuracy of ±1.5 dB. Data hold and Max hold functions. Backlit display allows use in dimly lit areas. Complete with microphone windscreen, 9-volt battery, and user manual. Model 407732-NISTL is also available with a Certificate of Calibration traceable to NIST at a single calibration point to 94 dB.View larger407732-Kit Sound Level Meter KitType 2 Sound Level Meter Kit meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems, and enforcing noise ordinances. Measures from 35 to 130 dB in two ranges and has an accuracy of ±1.5 dB. Data hold and Max hold functions. Backlit display allows use in dimly lit areas. Kit comes complete with 407732 sound meter, 407744 94 dB Sound Calibrator, microphone windscreen, three 9-volt batteries, hard carrying case, and user manual. Model 407732-Kit-NIST is also available with a Certificate of Calibration traceable to NIST which includes 407732-NIST Sound Level Meter and 407722-NIST Sound Calibrator.407736 Type 2 Sound Level Meter with Calibration CheckSound Level Meter measures in 2 ranges from 35 to 130 dB with ±1.5 dB accuracy that meets ANSI and IEC Type 2 standards. It features a built-in 94 dB calibration check, fast/slow response time, A/C Weighting, Max Hold, and analog AC/DC output for connection to an analyzer or recorder. Comes complete with microphone windscreen, 9-volt battery, carrying case, and user manual. Model 407736-NIST is also available with a Certificate of Calibration traceable to NIST.

## Features

- Unique display where characters reverse direction depending on measurement mode you are in
- Microprocessor based with quartz crystal oscillator to maintain high accuracy
- Tachometer memory stores last, max and min readings
- Provides wide RPM (photo and contact) and Linear Surface Speed (contact) measurements
- Accurate to 0.05 percent with max resolution of 0.1rpm in either photo or contact mode

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 10.3 x 3.1 x 1.5 inches |
| Item Weight | 8.8 ounces |
| Manufacturer | Extech Instruments |
| ASIN | B00023RVP2 |
| Item model number | 407750 |
| Batteries | 2 AA batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Date First Available | April 20, 2004 |

## Images

![Extech 407750 Sound Level Meter with Background Sound Absorber - Image 1](https://m.media-amazon.com/images/I/51NINvPHlGL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ incredible meter
*by J***. on December 22, 2020*

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.

### ⭐⭐⭐⭐⭐ Show Your Spouse They Are Louder Than the Stereo They Are Complaining About
*by M***N on January 17, 2015*

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.

### ⭐⭐⭐⭐⭐ Great SPL meter
*by A***R on July 2, 2024*

This meter is very easy to se and a great size for use on a job site.

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-02-06*