DFRobot (SEN0539-EN) Voice Recognition Module, Gravity, 3.3 V to 5 V

SEN0539-EN is a Gravity: offline language learning voice recognition sensormodule for micro:bit / Arduino / ESP32 - I2C & UART. It is ideal forhuman-computer interaction, machine learning, voice assistants, and smart homevoice control projects. It is easy to use and compatible with Arduino,micro:bit, and ESP32, with detailed tutorials provided. It offers plug-and-playfunctionality through I2C and UART. The module features 121 built-in commandwords commonly used in education and smart home settings and supports 17customized commands (e.g., recording a cat's meow for an automatic feeder). Themodule is highly integrated, including an onboard speaker and microphone,providing real-time voice feedback. Suitable for voice recognition interaction,voice-controlled terminal, competition and project development. * 121 pre-programmed commands: ready for immediate use without any setup * Self-learning capability: supports the addition of 17 customized command words * Offline operation, enhanced privacy: no network required * High integration: includes an onboard speaker and microphone * Instant voice feedback: provides real-time recognition results * 3.3 to 5V operating voltage, maximum operating current is less than equal to 370mA (5V) * 0x64 I2C address * Onboard microphone sensitivity is -28dB * Module size is 49x32mm/1.93 x1.26" * Operating temperature range from 0-70 CCONTENTSGravity: voice recognition module - I2C & UART (V1.1), Gravity-4P I2C/UARTsensor connector.