---
product_id: 91483603
title: "I2S MEMS Microphone Breakout - SPH0645LM4H (3421)"
brand: "adafruit"
price: "£18.23"
currency: GBP
in_stock: true
category: "Adafruit"
url: https://www.desertcart.co.uk/products/91483603-i2s-mems-microphone-breakout-sph0645lm4h-3421
store_origin: GB
region: United Kingdom
---

# Compact 3x2x1 inch mini form factor Wide 50Hz-15kHz frequency range Purely digital output, zero analog noise I2S MEMS Microphone Breakout - SPH0645LM4H (3421)

**Brand:** adafruit
**Price:** £18.23
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game with the future-ready digital mic everyone’s buzzing about!

## Quick Answers

- **What is this?** I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit
- **How much does it cost?** £18.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/91483603-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 or setup with its sleek 3x2x1 inch footprint and featherlight 5g weight.
- • **Broad Frequency Capture:** Capture rich audio details from deep bass to crisp highs across 50Hz to 15kHz.
- • **Unidirectional Precision:** Focus on your sound source with a unidirectional polar pattern that minimizes background noise.
- • **Plug & Play Compatibility:** Optimized for Cortex M-series chips and single-board computers, making integration effortless.
- • **Crystal-Clear Digital Audio:** Experience pristine sound with zero analog interference thanks to the purely digital I2S output.

## Overview

The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, lightweight digital microphone designed for crystal-clear audio capture. Operating across a wide 50Hz to 15kHz frequency range, it delivers high sensitivity and low noise with a purely digital I2S output, eliminating analog conversion. Perfectly suited for voice and video recording projects, it integrates seamlessly with Cortex M-series chips and single-board computers, making it a top choice for modern audio applications.

## Description

best product

## 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 db |
| Audio Sensitivity | 94 db |
| Best Sellers Rank | #6,769 in Musical Instruments ( See Top 100 in Musical Instruments ) #92 in Condenser Microphones #364 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 4.5 out of 5 stars (69) |
| Enclosure Material | Plastic |
| Frequency Range | 50Hz - 15kHz |
| Frequency Response | 15 KHz |
| Hardware Platform | PC |
| Impedance | 16 ohm |
| Item Dimensions | 3 x 2 x 1 inches |
| Item Weight | 5 g |
| 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 |
| Number of Items | 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
- **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

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

## Frequently Bought Together

- Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)
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**Shop now:** [https://www.desertcart.co.uk/products/91483603-i2s-mems-microphone-breakout-sph0645lm4h-3421](https://www.desertcart.co.uk/products/91483603-i2s-mems-microphone-breakout-sph0645lm4h-3421)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-09-17*