Suitable for 30Pin wide body ESP32 development board. This module is safe and reliable and can be extended to various applications. This breakout board can expand one GPIO pin of the ESP32 development board to two, which is convenient for users to reuse all pins in smart home projects. A nice breadboard alternative. The expansion board is a double-layer board. One pin is wired on both sides, ensuring stable circuit performance and high reliability, with no risk of poor contact or unstable signal transmission. The board of this version has been fully soldered. No additional soldering is required, making it very convenient to use. Color: Green Material: Plastic Size: 6.6 x 6.3 x 1.05 cm Package Contents: 1 x ESP32 Expansion Board Only the above package content is included; other products are not included. Note: Light reflection and differences in display screens may cause the color of the item in the picture to vary slightly from the actual product. Measurement error allowance is +/- 1-3 cm.