> **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

# ASR Unit with Offline Voice Module (CI-03T)

**Type:** Product page · **SKU:** CE10141 · **Brand:** [M5Stack](https://core-electronics.com.au/brands/m5stack-australia)
**Page:** https://core-electronics.com.au/ai-offline-voice-recognition-module-ci-03t.html ([markdown](https://core-electronics.com.au/ai-offline-voice-recognition-module-ci-03t.html.md))

Unit ASR is an AI offline voice recognition unit, built with the CI-03T AI intelligent offline voice module. The unit offers powerful...

## Pricing

- **Price:** $21.55 (inc GST) — $19.59 AUD, exc GST
- **Quantity discounts:** 10+ $18.81 (exc GST) · 25+ $18.22 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 02 and Sep 14.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10141:1` (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/CE10141:1.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

**Unit ASR** is an **AI** offline voice recognition unit, built with the **CI-03T** AI intelligent offline voice module. The unit offers powerful capabilities such as speech recognition, voiceprint recognition, voice enhancement, and voice detection. It supports AEC (Acoustic Echo Cancellation), effectively removing echoes and noise interference, thereby enhancing voice recognition accuracy. It also supports mid-conversation voice interruption, allowing flexible interruption during voice recognition and quick response to new commands. The product comes pre-configured with 42 English wake-up words and feedback command words. It uses **UART** serial communication for data transmission and supports awakening the device via UART or voice keywords. The unit also supports user-customizable multi-language **wake-up** recognition words and can recognize up to 300 command words. Equipped with a **microphone** for clear audio capture and a built-in **speaker** for high-quality audio feedback, this product is widely used in AI assistants, smart homes, security monitoring, automotive systems, robotics, smart hardware, and healthcare. It is an ideal choice for implementing intelligent voice interaction.

## Features

- CI-03T AI intelligent offline voice module
- Noise reduction processing
- 42 pre-installed commands
- Supports up to 300 command words
- UART serial communication
- Supports custom wake-up word
- Microphone and speaker
- Development platforms: 
    - UIFlow 1.0
    - UIFlow 2.0
    - Arduino IDE
 
### Includes

- 1x Unit ASR
- 1x HY2.0-4P Grove cable (20cm)
 
### Applications

- AI Assistant
- Smart Home
- Security Monitoring
- Automotive Systems
- Robotics and Smart Hardware
- Healthcare
 
### Specifications

 | Specification | Parameter |
|---|---|
| AI Module | CI-03T AI Intelligent Offline Voice Module |
| Command Words | Supports up to 300 command words,Factory default 42 built-in commands |
| Wake-up Method | UART serial communication or voice keyword wake-up |
| Microphone | Analog microphone |
| Speaker | 8O@1W speaker (used for output device wake-up feedback) |
| Communication | UART serial communication, default baud rate: 115200@8N1 |
| Noise Reduction | AEC (Acoustic Echo Cancellation) |
| Operating Temperature | 0-40°C |
| Product Size | 48.0 x 24.0 x 16.0mm |
| Product Weight | 10.5g |
| Packaging Size | 136.0 × 92.0mm × 13.0mm |
| Packaging Weight | 15.8g |

## LEARN AND DOCUMENTS

- [DOCUMENTS](https://docs.m5stack.com/en/unit/Unit%20ASR)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce10141.jpg)