Spanish 
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.
- Model:ESP8266
- ISM 2.4GHz
- PA +25dBm
- 802.11b/g/n
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)
Package included:
1 x Module g
