1,ESP32 Expansion Board: This ESP32 breakout board GP10 1 into 2 is a 38PIN narrow ESP32 for ESP wR0M 32 microcontroller development board. 2,GPIO 1 into 2: This breakout board expands 1 GPIO pin of the esp32 development board into 2, allowing users to reuse all pins in smart home projects. 3,2 Types Connections: Pin header and screw terminal. Just choose them according to your purpose. No need to solder your own parts, very easy to use. 4,Double Layer PCB: The expansion board is a double layer board with a pin on both sides. Therefore, the circuit is stable and reliable, and there will be no poor circuit contact and unstable signal transmission. 5,Important Note: Only compatible with the 38 pin narrow and no mounting hole versions of the esp32 development board, not applicable to other versions. 2 x ESP32 Development Board Item Type: ESP32 Development BoardMaterial: PCBPins: 38PinSupport: for Lua ProgramSupport: 3 Modes: AP, STA and AP STAAdopted: 2.4Hz Dual Mode Wifi and Bluetooth Chip for ESP wR00M 32 and 40nm Low Power Technology Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.