INMP441 Omnidirectional MEMS Microphone Module – 24-Bit I2S Digital Output for ESP32

Upgrade your electronics projects with the INMP441 MEMS Microphone Sensor Module — a compact, high-precision, low-power digital microphone designed for seamless integration with ESP32, Arduino, and other I2S-compatible microcontrollers. Whether you're building voice-activated systems, audio recorders, industrial automation tools, or IoT smart devices, this module delivers clean, accurate digital audio output every time.

Key Features

Omnidirectional pickup: Captures sound equally from all directions for versatile placement in any project enclosure.
24-bit high-precision audio: Delivers crystal-clear digital audio data with a wide dynamic range and minimal noise floor.
I2S digital output: Direct digital signal output eliminates the need for an ADC, making integration straightforward and reliable.
Ultra-low power consumption: Ideal for battery-powered and portable IoT applications where efficiency matters.
ESP32 ready: Fully compatible with ESP32 and other popular development boards — plug in and start coding in minutes.
Compact form factor: Measuring just 1×1×1 cm (approx. 0.39×0.39×0.39 in), it fits into even the tightest project spaces.
Durable construction: Built with a plastic and metal housing for everyday workshop handling.

Specifications

Sensor Type: MEMS (Micro-Electro-Mechanical System)
Output Interface: I2S Digital
Bit Depth: 24-bit
Pickup Pattern: Omnidirectional
Dimensions: 1×1×1 cm / 0.39×0.39×0.39 in
Material: Plastic + Metal
Compatible With: ESP32, and other I2S-enabled microcontrollers
Typical Applications: Industrial Automation, IoT Devices, Voice Recognition, Audio Recording
Battery: Not included / Not required (powered via host board)
Country of Origin: Made in Mainland China

What's in the Box?

1 × INMP441 MEMS Microphone Module

Perfect For

Voice command & recognition systems
Smart home and IoT automation projects
Industrial sound monitoring
Audio data logging and recording
Maker, hobbyist, and prototyping applications

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Technical Reference

For broader guidance on MEMS microphone technology and sensor integration standards, visit the National Institute of Standards and Technology (NIST) — a trusted authority on measurement science and sensor technology.

Important Notes

Photos may not reflect actual size — please refer to the specifications above for exact dimensions.
Please allow ±5–10 mm variance due to manual measurement.
Colours shown in product images may vary slightly due to monitor settings, lighting, and display calibration.

Frequently Asked Questions

Q: Is the INMP441 MEMS Microphone Module compatible with ESP32?

A: Yes! The INMP441 module is specifically designed for I2S-compatible boards such as the ESP32. It outputs a clean 24-bit digital I2S signal that the ESP32 can read directly without requiring an external analog-to-digital converter (ADC), making setup simple and efficient.

Q: What is the difference between I2S digital output and analog output on a microphone module?

A: I2S (Inter-IC Sound) is a standard digital audio interface that transmits audio data in a serial digital format. Unlike analog microphone modules, an I2S digital output microphone like the INMP441 sends pre-converted digital audio directly to your microcontroller, resulting in less noise, greater precision (24-bit), and easier integration with modern development boards.

Q: What projects is the INMP441 MEMS Microphone Module best suited for?

A: This module excels in voice recognition systems, smart home IoT devices, industrial sound monitoring, audio recorders, and any maker or prototyping project requiring high-precision, low-power digital audio capture. Its omnidirectional pickup makes it versatile for open-air or enclosed installations.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

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