Description: Not only it is easy to program for this controller by using the CP2102-USB interface,but also unnecessary to press the flash and reset buttons before each flash operation.The ESP8266 has powerful on-board processing and storage capabilities, and can be integrated with sensors and other application-specific devices through its GPIOs.NodeMcu is an open source Lua based firmware for the ESP8266, ultra low cost wireless modules, development boards for rapid prototyping, integrated with ESP8266 chips.Modern Internet development tools can use the built-in API to instantly put your idea on the .It is compatible with IDE,works great with the latest IoT/Micropython.Parameters:1. Support wireless 802.11b/g standard2. Support three working modes of STA/AP/STA+AP3. Built-in TCP/IP protocol stack, supports multiple TCP Client connections (5MAX)4. D0~D8, SD1~SD3: used as GPIO, PWM, I2C, etc., port drive capability 15mA5. AD0: 1 channel ADC6. Power input: 4.5V~7V, support USB power supply7. Working current: continuous transmission: approximately equal to 70mA (200mA MAX), standby Less than 200uA8. Transmission rate: 110-460800bps9. Support UART/GPIO data communication interfaceESP8266 CP2102 ESP-12E WIFI Serial Wireless ModuleBuilt-in -USB, with flash and reset switches, easy to program compatible, works great with the latest IDE/ IoT/MicropythonColor: As ShownMaterial: plasticPackage Contents:2 x Development BoardOnly 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.