> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# I2S microphone

**Type:** Product page · **SKU:** CE10259 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/i2s-microphone-inmp441.html ([markdown](https://core-electronics.com.au/i2s-microphone-inmp441.html.md))

Add a simple microphone to microcontroller or GPIO based projects

## Pricing

- **Price:** $12.30 (inc GST) — $11.18 AUD, exc GST
- **Quantity discounts:** 5+ $10.95 (exc GST) · 15+ $10.62 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 31 today; more stock is typically available with a 8–12 day lead time.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10259:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE10259:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

A digital audio sensor designed for sound capture in [microcontroller-based projects](https://core-electronics.com.au/development-boards.html). By providing a direct I2S (Inter-IC Sound) output, this module translates acoustic waves into digital data without the need for external pre-amplifiers or bulky analog-to-digital converters.

Traditional analog microphones often suffer from signal degradation and electrical noise, especially when routed near Wi-Fi antennas or motor controllers. This MEMS unit eliminates these frustrations by performing the analog-to-digital conversion directly on-chip, delivering a clean, noise-resistant signal straight to your dev-board using a universal protocol.

### Features

- **Enjoy interference-free audio** by utilising a direct digital I2S output that bypasses the hiss and hum of noisy analog-to-digital conversion stages.
- **Capture crystal-clear voice commands** and subtle environmental sounds with a high 61 dB(A) signal-to-noise ratio, providing the clarity needed for speech recognition algorithms.
- **Simplify your power budget** with an ultra-efficient design that draws less than 2mA of current, making it perfect for "always-on" listening in portable projects.
- **Integrate with ease** into 3.3V logic systems, ensuring direct compatibility with modern development boards without the need for level shifting.
 
### Specifications

 | Property | Specification |
|---|---|
| Interface Type | I2S (Inter-IC Sound) |
| Directionality | Omnidirectional |
| Operating Voltage | 3.3V (1.6V to 3.6V Range) |
| Operating Current | <2mA |
| Signal-to-Noise Ratio (SNR) | 61 dB(A) |
| Sensitivity | -26 dBFS |
| Frequency Response | 50 Hz to 15 kHz |
| Form Factor | Bottom-port MEMS Module |

### Product includes

- I2S Microphone Module (INMP441)
- 1x6 Male Header

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce10259_microphone-module.jpg)