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🎤 Tiny Mic, Big Impact — Hear What Others Miss!
The Adafruit I2S MEMS Microphone Breakout (SPH0645LM4H) is a compact, purely digital microphone module designed for professional-grade audio detection and recording. With a frequency response spanning 50Hz to 15KHz and 94dB sensitivity, it delivers precise sound capture without analog noise. Its ultra-small size and I2S digital output make it ideal for innovative projects requiring clean, reliable audio input in tight spaces.
| ASIN | B06XNL2GBW |
| Antenna Location | Voice Recording, Video Recording, Video Conference |
| Audible Noise | 15 Decibels |
| Audio Sensitivity | 94 Decibels |
| Best Sellers Rank | 93,204 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,736 in RCA Cables |
| Box Contents | Microphone |
| Brand Name | Adafruit |
| Colour | Blue |
| Compatible Devices | Personal Computer |
| Connectivity Technology | XLR |
| Connector Type | XLR |
| Customer Reviews | 4.6 4.6 out of 5 stars (62) |
| 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 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 |
| 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 |
J**.
The microphones works as expected
S**D
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.
J**.
Excellent, I love these
E**Z
Gut
A**L
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.
Trustpilot
1 month ago
2 weeks ago