1.1 IN 2: This breakout board expands the pins of the ESP32 development board into two parts, allowing users to reuse all pins in smart home projects. It is an alternative to traditional breakout boards. 2. Versatility: The ESP32 expansion breakout board 1 INTO 2 is a secure and reliable module that can be extended for various applications. This module features 38 pins, offering more functionality than the 30pin module. Additionally, it is compatible with the PCB, and its width is narrower than other modules. 3. Quality and Convenience: The ESP32 expansion board is a doublelayer PCB that connects pins on both sides. Thanks to this design, the circuit is stable and reliable, preventing poor circuit contact and unstable signal transmission issues. Furthermore, this upgraded version of the PCB is fully soldered and ready to use, requiring no additional assembly or soldering by the user. 4. Compatibility: This module is suitable for 38P IN narrowtype ESP32, ESP32 ESPWROOM32 microcontroller development boards. It is only compatible with the 38pin narrowhole version and the noinstallationhole version of the ESP32 development board and not with other versions.