Feature:1. 2 LAYER DESIGN: The development board adopts a double layer design, with one pin connected on both sides. Provide good contact and stable signal transmission for your for ESP32 board.2. POWERFUL FUNCTION: For ESP32 integrates antenna switch, RF balun, power amplifier, low noise amplifier, filter, and power management module.3. STRONG COMPATIBILITY: This expansion board supports AP, STA, and AP and STA coexistence modes.4. SAFE USE: For ESP32 module is safe, reliable, and scalable to various applications, use at will to meet your different needs!5. IDEAL REPLACEMENT: Breakout board can expand one for GPIO pin of the for ESP32 development board to two, making it very suitable for you to reuse all pins. Good component and an excellent substitute for your smart project.Specification:Item Type: For ESP32 Development BoardMaterial: FR 4 materialBoard Size: Approx. 77 x 63mm / 3.03 x 2.48inCompatibility: For Node MCU 32S Lua 38Pin GPIO expansion board.Package List:1 xFor ESP32 Development BoardNote:1. Not suitable for ESPWROOM 32 DevKit V1 version. Please confirm that the pin width of your for ESP32 board is consistent with the pin width. Splitting board.2. Important Note: for ESP32 Breakout Board GPIO 1 into 2 can only be compatible with 38 Pins for ESP32.