STM32F0 Discovery Board 1 channel relay module The ESP8266 Wi-Fi Module is

The ESP8266 Wi-Fi Module is a self-contained SoC with an integrated TCP/IP protocol stack that can give access to your Wi-Fi network

It means 7 commands are effective at the same time

Recognizer -- a container where acting voice commands (max 7) were loaded

Max DC load: 30V DC / 10A per channel

STM32F0 Discovery Board 1 channel relay module The ESP8266 Wi-Fi Module isSTM32F0 Discovery Board ARM Cortex M0 The STM32F0 Discovery Board is an entry level development platform based on the STM32F051R8T6 ARM Cortex M0 microcontroller. It includes everything needed for beginners and experienced users to get started quickly, with an onboard ST LINK V2 debugger and prototyping board. Key Features STM32F051R8T6 ARM Cortex M0 @ 48MHz 64KB Flash, 8KB RAM (LQFP64 package) Onboard ST LINK V2 debugger programmer Extension headers