Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Voice Recognition Modules |
| Origin | - |
| Recognition Mode | Offline Voice Recognition |
| Supported Languages | English, Mandarin Chinese |
| Max Command Count | Up to 50 customizable commands |
| Interface Type | UART / TTL Serial |
| Operating Voltage | 3.3V - 5V DC |
| Microphone Input | Analog MIC with AGC support |
| Response Time | < 200ms average latency |
| Development Tool | Web-based configuration portal |
| Dimensions | 45mm x 28mm x 6mm |
| Application Scenario | Smart Home, DIY Robotics, IoT Control |
Anonymous
Mar 31, 2026
Rating: 4/5
Great value, minor documentation gaps
The hardware is solid and recognition accuracy is impressive even with background noise. I deducted one star because the English documentation could be more detailed regarding the serial protocol specifics, but the community forums helped.
Anonymous
Mar 26, 2026
Rating: 5/5
Perfect for offline projects
I needed a voice module that didn't rely on Wi-Fi for my smart lamp project. This ASR-PRO board works flawlessly. The setup via the web interface was intuitive, and recognizing custom commands took less than a minute to configure.
Anonymous
Mar 12, 2026
Rating: 5/5
Reliable and fast
Used this in a prototype for a customer demo. The response time is incredibly fast, and it hasn't failed once during testing. The fact that it runs entirely offline makes it secure and reliable for industrial applications.
Anonymous
Mar 11, 2026
Rating: 4/5
Good for educational kits
We bought ten of these for our workshop. Students found them easy to program. The only downside is that the microphone sensitivity needs careful adjustment in the config tool, otherwise it picks up too much ambient noise.
Anonymous
Mar 09, 2026
Rating: 5/5
Exceeded expectations
For the price point, the performance is outstanding. I replaced a cloud-based solution with this module to reduce latency, and the user experience improved significantly. Highly recommend for anyone building local-first smart devices.
Anonymous
Mar 02, 2026
Rating: 5/5
Easy integration with Arduino
Connected this to my Arduino Uno without any issues. The UART communication is stable, and the ability to train it to recognize specific phrases like 'Open Gate' or 'Start Motor' is exactly what I needed for my automation setup.
Q: Does this module support connecting to an external speaker for voice feedback?
A: No, this module is designed for speech recognition only (input). It does not have Text-to-Speech (TTS) capabilities or an audio output pin for speakers.
Q: Can the module distinguish between different speakers?
A: No, the ASR-PRO performs command recognition based on phonetic patterns, not speaker verification. It will respond to the commanded phrase regardless of who speaks it.
Q: Can I add new voice commands after the initial setup without reflashing firmware?
A: Yes, you can add or modify voice commands at any time using the web-based configuration tool. Changes are saved directly to the module's memory instantly.
Q: What is the maximum distance for effective voice recognition?
A: Under normal indoor conditions with moderate noise, the effective range is approximately 3 to 5 meters. Using an external high-sensitivity microphone can extend this range.
Q: Is there a library available for ESP32 integration?
A: While we do not provide an official dedicated library, the module communicates via standard UART. Many users have successfully integrated it with ESP32 using standard Serial libraries available in the Arduino IDE.
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