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 Related Products You May Like 1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler 1.8M DisplayPort to HDMI Cable 4K – DP Adapter for PC & TV 1.8M USB-C to HDMI Cable 4K – MacBook, Laptop & Phone 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. {"@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [{"@type": "Question", "name": "Is the INMP441 MEMS Microphone Module compatible with ESP32?", "acceptedAnswer": {"@type": "Answer", "text": "Yes! The INMP441 module is specifically designed for I2S-compatible boards such as the ESP32. 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