M5Stack ASR Unit mit Offline Voice Module CI-03T

The M5Stack ASR Unit with the intelligent offline voice module CI-03T takes your projects to the next level of voice control – completely without an internet connection. You can recognize up to 300 voice commands locally, without relying on cloud services. The module is equipped with a microphone and a built-in speaker, allowing for both voice input and acoustic feedback. Thanks to AEC noise cancellation support, echoes and background noise are effectively removed – ensuring reliable recognition. A total of 42 commands are pre-installed, and you can define your own wake words via UART. The interrupt function is particularly useful, allowing you to interrupt ongoing voice commands to quickly respond to new inputs. Integration is incredibly simple – compatible with UIFlow and Arduino. Whether for smart home applications, robotics, automotive, or healthcare – this small, powerful module is your solution for intelligent voice interactions.

Technical specifications:
Manufacturer: M5Stack
Manufacturer SKU: U194
Module: CI-03T AI Offline Voice Module
Voice commands: Up to 300, 42 commands pre-installed
Wake-up modes: Via UART or voice keyword
Microphone: Analog microphone
Speaker: 8Ω, 1W for audio output
Communication: UART (115200 Baud, 8N1)
Noise cancellation: AEC (Acoustic Echo Cancellation)
Operating temperature: 0–40 °C
Dimensions: 48 × 24 × 16 mm
Weight: 16g

Included in delivery:
1x M5Stack ASR Unit with Offline Voice Module CI-03T
1x HY2.0-4P Grove cable (20 cm).