Voice Recognition Module Gravity Offline Sensor

Model No: MIS-00700

TK. 3250.41

Availability: In stock


Category: Audio

Supplier: DFRobot

Gravity: offline speech recognition sensor is built around an offline voice recognition chip, which can be directly used without an internet connection. It comes with 121 built-in fixed command words and supports the addition of 17 custom command words. Meanwhile, this voice recognition module compatibility with multiple common controllers enables it to provide a flexible solution for makers and electronics enthusiasts in terms of voice interaction. It can be applied to any application that requires voice control or interaction, such as various smart home appliances, toys, lighting fixtures, and robotics projects, among others.



  • Self-learning function: Control the module to learn command words by the voice, and any audio can be trained as a command
  • Support I2C and UART, with a Gravity interface
  • Compatible with 3.3V/5V
  • Built-in with 121 commonly-used fixed command words
  • The module has a built-in speaker and an interface for an external speaker, which can provide real-time voice feedback on recognition results
  • Equipped with power indicator (red) and recognition status indicator (blue)
  • Dual microphones provide better noise resistance and longer recognition distance
  • Compatible with Arduino controllers: Arduino UNO, Arduino Leonardo, Arduino MEGA, FireBeetle series controllers, Raspberry Pi, ESP32

  • Voice recognition interaction
  • Voice-controlled terminal
  • Competition and project development

  • Operating Voltage: 3.3 - 5V
  • Maximum Operating Current: ≤370 mA (5V)
  • Communication: I2C/UART
  • I2C Address: 0x64
  • Fixed Command: 121
  • Fixed Wake-up Command: 1
  • Custom Command: 17
  • Learning Activation Command: 1
  • Onboard Microphone Sensitivity: -28db
  • Module Size: 49×32 mm/1.93×1.26”
  • Operating Temperature: 0-70℃

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