2 x ESP8266 ESP-01 Programming and Development Tool Board (Auto-reset) Automatically selects the power from VR or VUSB. Breadboard Friendly and FTDI Basic 5V Interface. It can be used in the BB-E01 or China ESP-01 blue board(old) / black board(new). Built-in Auto-reset Function, Suitable for use in the Arduino IDE. FLASH DOWNLOAD TOOLS and any Terminal Software. Packing list BB-E01ADP x1 (As Photo1)