Features:

Data download access to the website: http://www.nodemcu.com
The chip model: CP2102; It is designed to occupy minimal PCB area
ESP8266 is a highly integrated chip designed for the needs of a new connected world
Its high degree of on-chip integration allows for minimal external circuitry

Specifications:

ESP8266 is a highly integrated chip designed for the needs of a new connected world.
It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.
ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime.
Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.
The chip model: CP2102

Packing List:

2 * ESP8266 Serial WiFi Module

The chip model: CP2102; There is the way to guide you to use the new version: The command you needed to use is: esptool.py --baud 115200 --port /dev/tty.SLAB_USBtoUART write_flash -fs 32m -ff 80m --flash_mode dio 0x00000 boot_v1.7.bin 0x1000 user1.bin 0x37c000 esp_init_data_default.bin 0x37e000 blank.bin The important part is “—flash mode dio” https://github.com/espressif/esptool/wiki/SPI-Flash-Modes;

Firmware link: https://github.com/nodemcu/nodemcu-firmware; Data download access to the website: http://www.nodemcu.com; Makerfocus nRF24L01+ and ESP8266 ESP-01 Breadboard Breakout Adapter Board is come for free, it can compatible with "nRF24L01+ " and ESP8266 ESP-01. 
ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor.

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area;