- DOUBLE-LAYER PCB: This expansion board features a robust double-layer design with connections on both sides, ensuring a stable circuit and high reliability. You can count on consistent performance with no issues of poor contact or unstable signal transmission. - GPIO 1 INTO 2: Transform one GPIO pin from your ESP32 development board into two. This functionality allows for efficient use of all available pins in your smart home projects, making it an excellent alternative to traditional breadboards. - DUAL CONNECTION TYPES: Choose between pin header and screw terminal connections based on your specific needs. This flexibility allows for easy integration into various projects. - COMPATIBILITY: This expansion board is specifically designed for the 38PIN narrow version of the ESP32 without mounting holes. It is not compatible with other versions, so please verify your board type before purchasing. Use Scenarios: 1. Smart Home Automation: Easily connect multiple sensors or actuators to a single GPIO pin, expanding your smart home capabilities without the clutter of a breadboard. 2. Prototyping: Ideal for rapid prototyping where space is limited, this board allows for quick adjustments and iterations in your design process. This product combines functionality, reliability, and compatibility, making it a valuable addition to your electronics toolkit.