---
product_id: 386208445
title: "I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "KD 0.90"
currency: KWD
in_stock: true
reviews_count: 4
category: "Adafruit"
url: https://www.desertcart.com.kw/products/386208445-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: KW
region: Kuwait
---

# 50Hz-15kHz frequency range Compact 7.6x5.1x2.5 cm size Purely digital I2S output I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** KD 0.90
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game with the tiniest digital mic that packs a punch!

## Quick Answers

- **What is this?** I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit
- **How much does it cost?** KD 0.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/386208445-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:** Fits seamlessly into any project with a sleek, bottom-ported MEMS microphone just 7.6 x 5.1 cm—perfect for space-conscious pros.
- • **Broad Frequency Range:** Capture every nuance from deep 50Hz bass to crisp 15kHz highs, ideal for versatile audio applications.
- • **Crystal-Clear Digital Audio:** Experience pristine sound capture with a purely digital I2S output, eliminating analog noise for flawless recordings.
- • **Low Power, High Performance:** Weighing only 5 grams and powered by a single lithium-ion battery, it’s the smart choice for efficient, on-the-go audio sensing.
- • **Plug-and-Play Compatibility:** Optimized for Cortex M-series chips and single-board computers, ensuring effortless integration and rapid deployment.

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, bottom-ported digital microphone designed for professional-grade audio capture. Operating across a 50Hz to 15kHz frequency range, it delivers clear, noise-free sound via a purely digital I2S interface. Optimized for Cortex M-series and single-board computers, this lightweight 5-gram mic is perfect for developers and audio enthusiasts seeking high-quality, low-cost sound detection in a miniature form factor.

## 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: PandemicHQ - 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.
Review: Gut - Gut

## Features

- small, low cost MEMS mic with a range of about 50Hz - 15KHz
- there are three digital pins
- The microphone is a single mono element
- This I2S MEMS microphone is bottom ported
- MEMS mics can detect sound and convert it to voltage

## 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 | #45,217 in Computers ( See Top 100 in Computers ) #542 in Single-Board Computers |
| Brand | Adafruit |
| Built-In Media | Microphone |
| Color | Blue |
| Compatible Devices | Personal Computer |
| Connectivity Technology | I2S |
| Connector Type | XLR |
| Customer Reviews | 4.5 out of 5 stars 56 Reviews |
| Enclosure Material | Plastic, Resin |
| Frequency Range | 50 hz 15 khz |
| Frequency Response | 15 KHz |
| Hardware Platform | PC |
| Impedance | 16 Ohms |
| Item Dimensions | 7.6 x 5.1 x 2.5 centimeters |
| Item Weight | 5 Grams |
| Item height | 1 inches |
| Manufacturer | Adafruit |
| Maximum Frequency | 15 KHz |
| 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 |
| 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
- **Connectivity technology:** I2S
- **Connector type:** XLR
- **Model name:** Adafruit I2S MEMS Microphone Breakout
- **Recommended uses for product:** Voice Recording, Video Recording, Video Conference

## Images

![I2S MEMS Microphone Breakout - SPH0645LM4H (3421) - Image 1](https://m.media-amazon.com/images/I/611Bn5t945L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ PandemicHQ
*by A***L on 2 September 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.

### ⭐⭐⭐⭐⭐ Gut
*by E***Z on 24 October 2025*

Gut

### ⭐⭐⭐⭐⭐ Gut verarbeitet
*by M***L on 26 October 2023*

Kann ich noch nicht sagen da ich es mit wled und dem esp 32 noch nicht zum laufen bekommen habe.

## Frequently Bought Together

- Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)
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**Shop now:** [https://www.desertcart.com.kw/products/386208445-i2s-mems-microphone-breakout-sph0645lm4h-3421](https://www.desertcart.com.kw/products/386208445-i2s-mems-microphone-breakout-sph0645lm4h-3421)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-27*