---
product_id: 91483603
title: "Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "€ 24.09"
currency: EUR
in_stock: true
reviews_count: 10
category: "Adafruit"
url: https://www.desertcart.gr/products/91483603-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: GR
region: Greece
---

# Wide 50Hz-15kHz frequency range Compact & ultra-thin design Purely digital I2S output Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** € 24.09
**Availability:** ✅ In Stock

## Summary

> 🎤 Tiny Mic, Big Impact: Digitally tuned for the future of sound!

## Quick Answers

- **What is this?** Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit
- **How much does it cost?** € 24.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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

- • **Space-Savvy Design:** Smaller and thinner than classic mics, perfect for sleek, modern projects
- • **Broad Audio Capture:** Covers 50Hz to 15kHz for crisp, clear general audio recording and detection
- • **Versatile Use Cases:** Ideal for voice, video recording, conferencing, and creative sound-reactive projects
- • **Noise-Resilient Sensitivity:** High sensitivity with 15dB SNR to pick up subtle sounds even in noisy environments
- • **Seamless Digital Integration:** No analog conversion needed—plug & play with Cortex M-series & SBCs

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, purely digital microphone designed for seamless integration with modern microcontrollers and single-board computers. Featuring a wide frequency response from 50Hz to 15kHz and a slim form factor, it excels in voice and audio detection applications without the need for analog conversion. Perfect for professionals and makers seeking high-quality, space-efficient audio input solutions.

## 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: It did not come in the package - Originally shipped package without the product. They rectified immediately great product.
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.

## 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 |
| Antenna Location | Voice Recording, Video Recording, Video Conference |
| Audible Noise | 15 Decibels |
| Audio Sensitivity | 94 Decibels |
| Best Sellers Rank | #6,145 in Musical Instruments ( See Top 100 in Musical Instruments ) #84 in Condenser Microphones #336 in Single Board Computers (Computers & Accessories) |
| Brand | Adafruit |
| Built-In Media | Microphone |
| Color | Blue |
| Compatible Devices | Personal Computer |
| Connectivity Technology | XLR |
| Connector Type | XLR |
| Customer Reviews | 4.5 out of 5 stars 66 Reviews |
| Enclosure Material | Plastic |
| Frequency Range | 50Hz - 15kHz |
| Frequency Response | 15 KHz |
| Hardware Platform | PC |
| Impedance | 16 Ohms |
| Item Dimensions | 3 x 2 x 1 inches |
| Item Weight | 5 Grams |
| Manufacturer | Adafruit |
| Maximum Frequency | 15 KHz |
| Mfr Part Number | 3421 |
| Microphone Form Factor | Mini |
| Model Name | Adafruit I2S MEMS Microphone Breakout |
| Model Number | 3421 |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Number of Channels | 1 |
| Polar Pattern | Unidirectional |
| Power Source | Corded Electric |
| Recommended Uses For Product | Voice Recording, Video Recording, Video Conference |
| Signal-to-Noise Ratio | 15 dB |
| Special Feature | Purely digital with a digital output, optimized for Cortex M-series chips and single-board computers |
| 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

### ⭐⭐⭐⭐⭐ It did not come in the package
*by A***W on April 15, 2026*

Originally shipped package without the product. They rectified immediately great product.

### ⭐⭐⭐⭐⭐ 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

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.gr/products/91483603-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421](https://www.desertcart.gr/products/91483603-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421)

---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-05-31*