This board is a version of the NodeMCU board with an improved ESP-12S module (instead of ESP-12F/E). The board has a micro USB connection with which it can be programmed and/or powered (micro USB cable not included)

Specifications:-

• Supply voltage:

                             Micro USB: 5V DC

                            5V pin: 5V DC

                            3V3 pin: 3.3V DC

• GPIO voltage: 3.3V
• Chip: ESP8266 ESP-12S

                              Flash memory: 4MB

                              Built-in Wi-Fi

• USB to serial converter: CH340C
• Built-in RGB LED:

                              Red: GPIO4

                              Green: GPIO2

                              Blue: GPIO5

• CH340 drivers:

                              Windows

                              Mac OSX

                              Linux

                              Android

Package Includes:-

1 x Ai Thinker NodeMCU-ESP8266 (ESP-12S) Development Board