Standard pin interface to achieve full compatibility with the pitch Arduino Uno, Mega and so on. (Unless the standard size arduino, such as Nano, Mini)
3.3V power supply using advanced chip (with the official expansion board power chip CC3000 same), so 3.3V Arduino board provided more accurate, so ESP8266 as official cc3000 chip work as normal, there is no gap.
It leads to a WiFi module power supply / service interface to facilitate developers to extend the power supply and maintenance.
Onboard ESP8266-12 stable industrial grade serial WiFi module, using an enhanced PCB antenna, signal better.
You can quickly switch DIP switch ESP8266-12 industrial grade WiFi stable operation mode (such as operating mode and upgrade mode) module, integrated serial chip, quickly flashing the firmware.

Technical Details

Product Details

Package Dimensions
Width : 3.54 inch
Height : 0.79 inch
Length : 5.91 inch

Shipping Weight: 1.12 ounce (View shipping rates and policies)

ASIN : B075F3FBH8

Product Description

10 support pwm / interrupt / serial / i2c scalable gpio
compatible configuration, call syntax!
The firmware update can be customized by expansion board
Without USB to TTL converter
A key to enter the brush write mode, without any wiring Standard pin interface to achieve full compatibility with the pitch Uno, Mega and so on. (Unless the standard size, such as Nano, Mini)
3.3V power supply using advanced chip (with the official expansion board power chip CC3000 same), so 3.3V board provided more accurate,
so ESP8266 as official cc3000 chip work as normal, there is no gap.
It leads to a WiFi module power supply / service interface to facilitate developers to extend the power supply and maintenance.
Onboard ESP8266-12 stable industrial grade serial WiFi module, using an enhanced PCB antenna, signal better.
You can quickly switch DIP switch ESP8266-12 industrial grade Wi-Fi stable operation mode
(such as operating mode and upgrade mode) module, integrated serial chip, quickly flashing the firmware.
Built-in 5V to 3.3V TTL level converter to prevent high-pressure TTL level of the WiFi module damage. (General module can not oh)
Onboard ESP8266-12 stable industrial grade WiFi module with a metal shield, immunity to interference.
Onboard ESP8266-12 standard pitch leads to a stable industrial grade WiFi module all interfaces, enabling developers to easily develop deep.
Site preparation ESP8266-12 provide industrial-grade stability WiFi module library, can be controlled by a very simple instruction, provide routine.
Use stackable design, it can continue to accumulate above the other modules, easy to use.
Onboard four LED displays the status of ESP8266, namely PWR, DFU, AP, STA, operation mode at a glance

Download link:
http://www.haljia.com/download/Transceiver/ESP8266/esp8266.rar
Packing List:
1*UNO R3 ESP8266 Serial Wi-Fi Shield Extend Board