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 fast track. It is compatible with for Arduino IDE,works great with the latest Mongoose IoT/Micropython. Parameters: 1. Support wireless 802.11b/g/n standard 2. Support three working modes of STA/AP/STA+AP 3. 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 15mA 5. AD0: 1 channel ADC 6. Power input: 4.5V~7V, support USB power supply 7. Working current: continuous transmission: approximately equal to 70mA (200mA MAX), standby Less than 200uA 8. Transmission rate: 110-460800bps 9. Support UART/GPIO data communication interface ESP8266 CP2102 NodeMCU LUA ESP-12E WIFI Serial Wireless Module Built-in Micro-USB, with flash and reset switches, easy to program Arduino compatible, works great with the latest for Arduino IDE/Mongoose IoT/Micropython Color: As Shown Material: plastic Different production batches may have different labels, but this does not affect the use of the product. Package Contents: 4 x Development Board