Specification:

Brand new

Model: ESP8266

Module: ESP-12E

ISM 2.4GHz

PA +25dBm

802.11b/g/n

Color: as picture shows

Quantity: 1pc

Warnings:

This module requires a 3.3 volt supply for VCC, and 3.3V logic

It is not 5V tolant,Connect RX or TX on 5V Arduino will destroy this module

You must use a logic level converter, or a 3.3V Arduino

The 3.3V supply on the Arduino Uno has inadequate current capabilit to power this
module

You must provide a separate, higher 3.3V supply(about 300mA or better)

ESP8266 introduction:

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

Package included:

1 x wifi module

Note:

Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same