Feature

●Sound level meter (also known as the decibel meter, noise meter) is a basic noise measurement instrument. We have launched a sound level meter, which is compatible with Arduino, plug-and-play. It can accurately measure the sound level of the surrounding environment.
●This product uses instrument circuit, 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 algorithm.
●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 station, room noise monitoring and so on.


Description

Gravity: Analog Sound Level Meter

INTRODUCTION
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.
This is an sound level meter compatible with Arduino (also known as decibel meter, noise meter). It uses instrument circuit and 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 station, bedroom noise monitoring, etc.

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: 22mA@3.3V, 14mA@5.0V
Output Voltage: 0.6 ~ 2.6V
Module Size: 60mm * 43mm / 2.37in*1.68in

SHIPPING LIST
Analog Sound Level Meter x1
Gravity Analog Cable 3Pin x1