ESP8266 Serial Port WIFI Module 3.3V SPI for Arduino

• Model:ESP8266-12
• ISM 2.4GHz
• PA +25dBm
• 802.11b/g/n

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 for Arduino will destroy this module. You must use a logic level converter, or a 3.3V for Arduino. The 3.3V supply on the for Arduino Uno has inadequate current capabilit to power this module. You must provide a separate,higher 3.3V supply(about 300mA or better)