--- product_id: 345451826 title: "Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421)" brand: "adafruit" price: "€ 34.24" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.pt/products/345451826-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421 store_origin: PT region: Portugal --- # 50Hz-15kHz frequency range Pure digital I2S output, no analog needed Compact 7.6x5.1x2.5 cm size Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) **Brand:** adafruit **Price:** € 34.24 **Availability:** ✅ In Stock ## Summary > 🎧 Tiny Mic, Big Impact: Hear the Future in Digital Clarity! ## Quick Answers - **What is this?** Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H (3421) by adafruit - **How much does it cost?** € 34.24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/345451826-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 - • **Broad Frequency Capture:** Crisp audio from deep 50Hz bass to bright 15kHz highs - • **Lightweight & Versatile:** Just 5 grams, perfect for voice, video, and conferencing - • **Plug & Play Compatibility:** Optimized for Cortex M-series & SBCs for seamless coding - • **Crystal-Clear Digital Sound:** Purely digital I2S output eliminates analog noise - • **Ultra-Compact Audio Powerhouse:** Smaller & thinner than classic mics for sleek integration ## Overview The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, purely digital microphone designed for professional-grade audio capture. With a frequency range of 50Hz to 15kHz and a lightweight form factor, it delivers clear sound without analog conversion, optimized for Cortex M-series chips and single-board computers. Ideal for voice recording, video, and conferencing applications. ## 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. ## 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 | |---------------|-------| | Antenna Location | Voice Recording, Video Recording, Video Conference | | Asin | B06XNL2GBW | | Audible Noise | 15 Decibels | | Audio Sensitivity | 94 Decibels | | Best Sellers Rank | 42,472 in Electronics & Photo (See Top 100 in Electronics & Photo) 766 in RCA Cables | | Box Contents | Microphone | | Brand Name | Adafruit | | Colour | Blue | | Compatible Devices | Personal Computer | | Connectivity Technology | I2S | | Connector Type | XLR | | Customer Reviews | 4.5 4.5 out of 5 stars (71) 4.5 out of 5 stars | | 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 centimetres | | Item Weight | 5 Grams | | Manufacturer | Adafruit | | Manufacturer Part Number | 3421 | | 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 | | Number Of Items | 1 | | Number Of Packs | 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 - **Colour:** Blue - **Compatible devices:** Personal Computer - **Connectivity technology:** I2S - **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 ### ⭐⭐⭐⭐⭐ Working as expected *by on Reviewed in Germany 6 April 2026* The microphones works as expected ### ⭐ Defected *by on Reviewed in the United Arab Emirates 13 June 2026* Item defected - could not test and return. ### ⭐⭐⭐⭐⭐ Small but mighty! Excellent for WLED projects. *by on Reviewed in the United States 11 February 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 furnaceThe 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. ## 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.pt/products/345451826-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421](https://www.desertcart.pt/products/345451826-adafruit-i2s-mems-microphone-breakout-sph0645lm4h-3421) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-11-10*