Module Type

Isolated word/speaker-dependent voice recognition

Chipset

LD3320 (ASR chip) + STM32 microcontroller

Input Voltage

DC 3.3V-5V

Current Draw

<50mA (idle), <100mA (recognition)

Microphone Input

Built-in MEMS mic + 3.5mm external mic jack

Recognition Method

Speaker-dependent (requires training)

Command Capacity

50-100 phrases (configurable via firmware)

Response Time

<0.5s (typical)

Interface

UART (TTL 3.3V), GPIO control pins

Output Control

5x GPIO pins (configurable as trigger outputs)

Language Support

English/Chinese (other languages via custom firmware)

Operating Temp.

-10°C to +60°C