---
product_id: 91483603
title: "Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "AR$47539"
currency: ARS
in_stock: true
reviews_count: 8
category: "Adafruit"
url: https://www.desertcart.com.ar/products/91483603-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: AR
region: Argentina
---

# Wide 50Hz-15KHz frequency range Compact 3x2x1 inch form factor Purely digital I2S output Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** AR$47539
**Availability:** ✅ In Stock

## Summary

> 🎤 Tiny Mic, Big Impact – Hear the Future Now!

## Quick Answers

- **What is this?** Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit
- **How much does it cost?** AR$47539 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/91483603-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421)

## Best For

- adafruit enthusiasts

## Why This Product

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

## Key Features

- • **Ultra-Compact Design:** Sleek and slim, fits effortlessly into any setup without bulk or compromise.
- • **Broad Frequency Range:** Captures rich audio detail from deep bass to crisp highs, perfect for versatile recording needs.
- • **Proven Sound Detection:** Trusted by makers for reactive lighting and audio projects, even in challenging environments.
- • **Plug-and-Play Integration:** Seamlessly connects with I2S-compatible devices, accelerating your prototyping and deployment.
- • **Crystal-Clear Digital Audio:** No analog conversion means pristine, noise-free sound capture for your next-gen projects.

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, purely digital microphone module designed for high-quality audio detection and recording. Featuring a frequency response of 50Hz to 15KHz and a small 3x2x1 inch footprint, it eliminates analog noise by outputting digital I2S signals directly. Ideal for professional and hobbyist projects alike, it excels in sound-reactive applications and delivers reliable performance in tight spaces.

## Description

Listen to this good news - we now have a breakout board for a super tiny I2S MEMS microphone. Just like 'classic' electret microphones, MEMS mics can detect sound and convert it to voltage, but they're way smaller and thinner. This microphone doesn't even have analog out, its purely digital. The I2S is a small, low cost MEMS mic with a range of about 50Hz - 15KHz, good for just about all general audio recording/detection.

Review: Small but mighty! Excellent for WLED projects. - I didn’t test it’s sound QUALITY, but I was amazed by how well it DETECTED sound in my WLED sound reactive project, even with it being placed inside a project box and under a bookcase! I didn’t expect it to really do much and added it as a “because I can” feature for fun but it turns out it’s very reactive and we’ve used it a lot. The gain and squelch settings in WLED allow you to make it as reactive as you’d like and tune out background noise like your furnace The store bought LED controllers that I’ve used (years ago) had to be very close to a speaker to detect anything and light up but NOT THIS! Very impressed and would highly recommend for projects like this.
Review: Excellent, high quality - Excellent, I love these

## Features

- Smaller and thinner than 'classic' electret microphones
- Low cost MEMS mic with a range of about 50Hz - 15KHz
- Good for just about all general audio recording/detection
- Purely digital, No analog conversion required!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XNL2GBW |
| Audio Sensitivity | 94 Decibels |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #8,798 in Musical Instruments ( See Top 100 in Musical Instruments ) #124 in Condenser Microphones #541 in Single Board Computers (Computers & Accessories) |
| Customer Reviews | 4.5 4.5 out of 5 stars (61) |
| Date First Available | January 18, 2017 |
| Frequency Response | 15 KHz |
| Hardware Platform | PC |
| Impedance | 16 Ohms |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.176 ounces |
| Item dimensions L x W x H | 3 x 2 x 1 inches |
| Item model number | 3421 |
| Manufacturer | Adafruit |
| Material | Plastic |
| Microphone Form Factor | Mini |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Channels | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 3 x 2 x 1 inches |
| Signal-to-Noise Ratio | 15 dB |
| UPC | 717520031291 604776613404 |

## Product Details

- **Brand:** Adafruit
- **Color:** Blue
- **Compatible Devices:** Personal Computer
- **Connectivity Technology:** XLR
- **Connector Type:** XLR
- **Included Components:** Microphone
- **Model Name:** Adafruit I2S MEMS Microphone Breakout
- **Polar Pattern:** Unidirectional
- **Recommended Uses For Product:** Voice Recording, Video Recording, Video Conference
- **Special Feature:** Purely digital with a digital output, optimized for Cortex M-series chips and single-board computers

## Images

![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 1](https://m.media-amazon.com/images/I/611Bn5t945L.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 2](https://m.media-amazon.com/images/I/81ONZNcOfGL.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 3](https://m.media-amazon.com/images/I/818LqHHMruL.jpg)
![Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 4](https://m.media-amazon.com/images/I/81Ed5T04XTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Small but mighty! Excellent for WLED projects.
*by S***D on February 11, 2026*

I didn’t test it’s sound QUALITY, but I was amazed by how well it DETECTED sound in my WLED sound reactive project, even with it being placed inside a project box and under a bookcase! I didn’t expect it to really do much and added it as a “because I can” feature for fun but it turns out it’s very reactive and we’ve used it a lot. The gain and squelch settings in WLED allow you to make it as reactive as you’d like and tune out background noise like your furnace The store bought LED controllers that I’ve used (years ago) had to be very close to a speaker to detect anything and light up but NOT THIS! Very impressed and would highly recommend for projects like this.

### ⭐⭐⭐⭐⭐ Excellent, high quality
*by J***. on January 23, 2026*

Excellent, I love these

### ⭐⭐⭐⭐⭐ PandemicHQ
*by A***L on September 2, 2024*

This worked right out of the box. I have this working in Home Assistant via EspHome. Reach out to me if you have questions or need consultation in that application.

## Frequently Bought Together

- Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)
- Adafruit Mini Metal Speaker w/Wires - 8 ohm 0.5W [ADA1890]
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-18*