Suitable for 30Pin wide body ESP32 development board. This module is safe and reliable and can be extended to applications. This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative. The expansion board is a double-layer board. One pin is wired on both sides. Therefore, the circuit is stable and highly reliable, and there will be no poor circuit contact and unstable signal transmission. The board of this version has been soldered completely. No need to solder parts by yourself, which is very convenient to use. Colour:Green Material:Plastic Size:6.6x6.3x1.05cm Package Contents: 3 x ESP32 Expansion Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Suitable for 30Pin wide body ESP32 development board. This module is safe and reliable and can be extended to applications. This breakout board can expand one GPIO pin of esp32 development board to two, which is convenient for users to reuse all pins in smart home projects. Nice breadboard alternative. The expansion board is a double-layer board. One pin is wired on both sides. Therefore, the circuit is stable and highly reliable, and there will be no poor circuit contact and unstable signal transmission. The board of this version has been soldered completely. No need to solder parts by yourself, which is very convenient to use. Suitable for 30Pin wide body ESP32 development board. This module is safe and reliable and can be extended to applications.