ESP8266 WiFi Shield ESP-13  Expansion Board + Geekcreit™ UNO R3 Board With USB Cable For ArduinoNote: This version of UNO R3 can not compatible with MAC OS systemIntroduction: ESP8266-Based Serial WiFi Shield for Arduino is designed and developed by Shenzhen Doctors of Intelligence & Technology (SZDOIT). The shield is designed based on esp8266 by Espress if Systems、 pin-compatible with Arduino UNO\/Mega2560 Development Board. Features: WiFi module is industrial-grade chips ESP8266、 which is ESP-12E with metal shield、 strong anti-interference abilityShield is pin-compatible with Arduino Uno、 Mega2560 and other control board. A voltage converter chip is used to deal with 3.3V (Esp8266) and 5V (Arduino);Dual DIP switches is used for serial ports so that this module shield can be used alone as an Arduino Uno expansion board、 and also be used as ESP8266 expansion board;Serial data is transported to WiFi device transparently、 and vice versa. Arduino program does not need any configuration;Web Server is developed to configure WiFi parameters and serial port parametersThe module shield can be used as an independent ESP8266 development board. for instance downloading the official AT commands firmware NodeMCU open source firmware can be usedThe module shield also can be used as stand-alone expansion board for Arduino Uno.For more references about Doit serial WiFi module expansion board、 driver board information、 please refer to: http:\/\/www.doit.am  Technical Specifications: 802.11 b \/ g \/ n wireless standardSTA \/ AP modes supportTCP \/ IP protocol stack One socketSupports standard TCP \/ UDP Server and ClientSupports serial port baud rate configuration: 1200\/2400\/4800\/9600\/19200\/38400\/57600\/74800\/115200 bpsSupports serial data bits: 5\/6\/7\/8 bitsSupports serial parity: noneSupports serial stop bits: 1\/2 bitPin-compatible with Arduino UNO、 MegaArduino Pin-out 2\/3\/4\/5\/6\/7\/8\/9\/10\/11\/12\/13ESP8266 GPIO Pin-out 0\/2\/4\/5\/9\/10\/12\/13\/14\/15\/16 \/ ADC \/ EN \/ UART TX \/ UART RXKEY button: modes configurationDual-Ports DIP switches: switching Arduino and ESP8266WiFi operation current: continuous transmission operation: ≈70mA (200mA MAX)、 idle mode:<200ua;< span="">Serial WiFi transmission rate: 110-460800bpsTemperature: -40\u2103 ~ + 125 \u2103Humidity: 10%-90% non-condensingWeight: about 20gESP8266 WiFi Shield More information:User Manual: https:\/\/fineshang.gitbooks.io\/esp8266-based-serial-wifi-shield-for-arduino-user\/content\/ Package includes: 1 x Arduino ESP8266 WiFi shield1 x Arduino Compatible UNO R3 board1 x USB Cable