Features Module Advantages: The offline voice recognition development board has the advantages of low power consumption, small size, and stable performance. Multiple Usages: Can quickly learn and verify offline voice control for various peripherals, such as relays, LED lights, and PWM dimming, etc. Excellent Parts: On board Micro USB interface, for CH340NUSB to serial chip, high sensitivity microphone, 8Ω 1W speaker, and toggle switch. Universal IO Ports: This development board introduces all the IO ports of the voice module, which can be directly inserted into the bread board. Multiple Functions: Support customized startup broadcast voice, keyword and wake up word settings, customized reply language, serial port output, etc. Specification: Item Type: Voice Recognition Module Material: PCB USB Power Supply: 5V (also supports VCC Pin input 5V power supply) Features: No programming required, simple operation Web Settings, easy to understand Sensitive recognition, higher recognition rate Functions: Support custom power on broadcast voice Support keyword and wake words setting Support custom reply, serial output Support custom GPIO port control Setting can be modified unlimited times Can set a variety of real pronunciation IO Port: Universal IO PA25, 26, 27, PB2, 3, 6, 7 (IO port level 3.3V) Package List:1 x Voice Recognition Module Package List 1 x Voice Recognition Module