Ai-Thinker VC-02 Speech Recognition Module

Ai-Thinker VC-02 Speech Recognition Module is a high-performance, low-power, and compact voice‐interactive module designed for developers who want to integrate offline speech recognition, wake-word detection, and voice-controlled automation into their smart devices. Powered by the efficient XinSheng AX6615 processor, this module supports real-time offline speech processing, making it highly reliable even in environments without internet connectivity. Whether you are building IoT devices, smart home systems, educational projects, or industrial control products, the VC-02 offers an easy-to-use and cost-effective solution for seamless voice interaction.

The module comes with pre-built speech models, customizable wake words, and flexible communication interfaces, allowing rapid development and quick integration with microcontrollers such as ESP32, Arduino, STM32, and Raspberry Pi. With its high sensitivity, low latency, and excellent noise resistance, the Ai-Thinker VC-02 is ideal for both hobby-grade and professional projects that require precise and dependable speech control.

Key Features

1. Offline Speech Recognition

The VC-02 module supports fully offline speech recognition, ensuring reliable performance without relying on cloud services. This makes it perfect for security-sensitive applications and devices operating in remote areas.

2. High Performance AX6615 Chip

Built around the advanced AX6615 voice processing chip, the module delivers fast response times, accurate recognition rates, and stable operation in various environments.

3. Customizable Wake Words

Users can customize activation keywords to create personalized voice commands, making products more intuitive and user-friendly.

4. Multiple Communication Interfaces

The module supports UART, enabling straightforward integration with most microcontrollers and embedded platforms.

5. Low Power Consumption

Designed for battery-powered and always-on devices, the VC-02 ensures minimal energy usage without compromising performance.

6. High Noise Immunity

It features strong anti-interference capabilities, allowing the module to function accurately even in moderately noisy environments.

7. Compact and Lightweight

Its small form factor makes it suitable for space-constrained devices such as wearable products and portable IoT gadgets.

8. Easy Development and Integration

With ready-to-use AT commands, developers can implement speech recognition functions quickly without complex programming.

Specifications

• Model: Ai-Thinker VC-02

• Core Processor: AX6615 Voice Processing Chip

• Speech Recognition: Offline continuous speech commands

• Wake Word: Customizable wake-word functionality

• Communication Interface: UART (default); supports AT command control

• Working Voltage: 3.3V (typical)

• Current Consumption: Ultra-low power design with standby mode

• Microphone Input: Supports external microphone interface

• Operating Temperature: −20°C to +70°C

• Dimensions: Compact SMD/through-hole module footprint

• Operating Mode: Master/slave communication with MCU

• Audio Output: Digital control for external audio or device actions

Applications

1. Smart Home Automation

Use the VC-02 for voice-controlled home devices such as smart lights, switches, fans, curtains, appliances, and HVAC systems. Offline operation ensures instant response and privacy protection.

2. IoT Devices

Ideal for IoT products that require hands-free operation such as smart meters, wearable devices, personal assistants, and voice-activatable embedded gadgets.

3. Consumer Electronics

Enhance consumer devices like speakers, toys, learning kits, or smart remotes with accurate voice functionality.

4. Industrial Control

Implement voice commands in industrial machinery, safety systems, or automation equipment for hands-free and efficient operation.

5. Robotics and Education

Perfect for robotics projects, STEM learning kits, and academic experiments requiring reliable offline speech interaction.

6. Automotive Applications

Use in car consoles, dashboards, or in-vehicle systems to enable safe, hands-free control.

The Ai-Thinker VC-02 Speech Recognition Module is an innovative, powerful, and developer-friendly solution for embedding offline voice control into modern smart products. Its high recognition accuracy, low power requirements, and flexible customization make it an ideal choice for next-generation IoT and AI-powered devices.

Package Includes:

1 x Ai-Thinker VC-02 Speech Recognition Module

FAQ

1. Where can we buy this Ai-Thinker VC-02 Speech Recognition Module with STM8S003F3 MCU?

This product is available online at https://aiiottech.in/product/ai-thinker-vc-02-speech-recognition-module/ and also available at our store in Pudupakkam/Kelambakkam, Chennai-603103

2. When can I get this Ai-Thinker VC-02 Speech Recognition Module after placing the order?

RGRJ AIIoT TECHNOLOGIES will immediately ship and deliver the product within 1-3 working days.

Video Link: VC 02 AI THINKER – Voice Recognition Project