Features 1. Module Advantages The offline voice recognition development board has the advantages of low power consumption, small size and stable performance. 2. MULTIPLE USES It can quickly learn and verify offline voice control for various peripherals, such as relays, LED lights and PWM dimming, etc. 3. Excellent parts: Built-in Micro USB interface, for CH340NUSB to serial chip, high sensitivity microphone, 8Ω 1W speaker and toggle switch. 4. Universal IO Ports - This development board features all the IO ports of the voice module, which can be inserted directly into the breadboard. 5. Multiple Functions Support custom setup of startup broadcast voice, keywords and wake words, custom response language, serial port output, etc. Specification: Item Type: Voice Recognition Module Material: PCB USB power supply: 5V (also supports 5V power supply with VDC pin input) Features: No programming required, simple operation Web configuration, easy to understand Sensitive recognition, higher recognition rate Functions: Supports custom power in voice transmission Supports keyword and activation settings Support custom response, serial output Support customization GPIO port control Settings can be modified unlimited You can set a variety of real pronunciation IO port: Universal IO PA25, 26, 27, PB2, 3, 6, 7 (IO port level 3.3V) Packing List: 1 x Voice Recognition Module Package List 1 x Voice Recognition Module