The ESP8266 ESP-01 Adapter Board is a compact interface designed to simplify connections of ESP-01 modules. It provides regulated 3.3 V power and exposes all GPIO and UART pins for easy access, firmware programming, and testing. The board supports serial communication and debugging while ensuring stable operation for development. It is compatible with ESP8266 ESP-01 modules and integrates with development environments including Arduino IDE and Espressif SDK. Common applications include IoT prototyping, sensor integration, and embedded system testing.