Gravity: Analog Sound Level Meter - DFRobot

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Video Photos Gravity: Analog Sound Level Meter $39.50 SKU: SEN0232 - + Volume Discount
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This Arduino-compatible sound level meter accurately measures noise with a low-noise microphone, offering easy plug-and-play use and simple voltage conversion. Purchase this product and earn 395 reward points, which are tied to VIP membership program. Learn More > IntroductionFeaturesSpecificationDocumentsShipping List FAQ Review

Introduction

This is an Arduino-compatible sound level meter (also known as decibel meter or noise meter). It uses an instrument circuit and a low-noise microphone, which enable it to accurately measure the sound level of the surrounding environment. It can be applied to environmental noise testing, such as highway noise monitoring stations, bedroom noise monitoring, etc. Nowadays, there are many kinds of sounds surrounding, some of which are really noisy. It is really essential to measure whether the sound is noisy enough to do damage to our health.

Sound level meter (also known as the decibel meter, noise meter) is a basic noise measurement instrument. We have launched a sound level meter that is compatible with Arduino, plug-and-play. It can accurately measure the sound level of the surrounding environment. This product uses instrument circuit and a low-noise microphone, which make it highly precise. It supports 3.3~5.0V wide input voltage, 0.6~2.6V voltage output. The decibel value is linear with the output voltage, which leads to a simple conversion without complex algorithms. The connector is plug-and-play, without welding, so this product can be easily used in your application.

Sound level meter is widely used in environmental noise detection, such as highway noise monitoring stations, room noise monitoring, and so on. It’s time for you to DIY a sound level detector to protect your hearing.

Attention:

The black film on the microphone is a sensitive component; do not touch it with fingernails or other sharp objects.

Do not place this module on the surface of the conductor or the semiconductor; otherwise, it will short the microphone’s pins. It is recommended to place this module on a dry insulator’s surface or fix with nylon columns to hang in the air.

Features

  • High Precision: use instrument circuit, low noise microphone
  • Wide Voltage Input: 3.3~5.0V
  • Simple Conversion: linear analog output, 0.6~2.6V linear correspondence, 30~130dBA; no complex algorithm is required
  • Easy to Use: plug and play, without soldering

    • Specification

  • Measuring Range: 30dBA ~ 130dBA
  • Measurement Error: ±1.5dB
  • Frequency Weighted: A Weighted
  • Frequency Response: 31.5Hz ~ 8.5KHz
  • Time Characteristics: 125ms
  • Input Voltage: 3.3 ~ 5.0V
  • Input Current: [email protected], [email protected]
  • Output Voltage: 0.6 ~ 2.6V
  • Module Size: 60mm * 43mm / 2.37in*1.68in

    • Documents

  • Product wiki
  • Layout

    • Shipping List

  • Analog Sound Level Meter x1
  • Gravity Analog Cable 3Pin x1

    • FAQ

    Although the environment is very quiet, but the decibel value is not less than 30dbA. Why? Why is the decibel value unstable, and constantly varying? Is this normal?

    Explore More Related Questions >

    Review

    Rifai.Fai Jul 18, 2025

    Thanks, good products

    Nemanja.Janev Mar 31, 2025

    Great product. It is important to have a little knowledge about libraries and functionality of code parts, but realy noting too demanding.

    Rifai.Fai Nov 07, 2024

    Thanks, good products

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    Tag » Arduino Db Meter Code