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. ESP-12F:ESP8266-12F is an enhanced version of ESP8266-12, perfect peripheral circuit, four-layer board technology, enhanced impedance matching, better signal output, whether it is stability or anti-jamming capability, PCB antenna through professional laboratory testing, ROHS certification , Have been greatly improved! For those who choose ESP-12 before, even if the product has been made it does not matter, enhanced version is fully compatible with the firmware before the pin in the ESP-12 on the basis of the addition of six IO port, SPI port leads, the development more convenient, More extensive!Standards Certification: FCC / CE / TELEC

Wireless standards: 802.11 b / g / n

Frequency range: 2.4GHz-2.5GHz (2400M-2483.5M)

Data interface: UART / HSPI / I2C / I2S / Ir Remote Contorl GPIO / PWM

Operating voltage: 3.0 ~ 3.6V (recommendation 3.3V)

Working Current: Average: 80mA

Operating temperature: -40 ° ~ 125 °

Storage temperature: Nomal temperature

ESP-12E:

Model:ESP8266-12 ISM 2.4GHz PA +25dBm 802.11b/g/nWarnings:1.This module requires a 3.3 volt supply for VCC, and 3.3V logic.2.It is not 5V tolant,Connect RX or TX on 5V FOR Arduino will destroy this module.3.You must use a logic level converter, or a 3.3V FOR Arduino4.The 3.3V supply on the FOR Arduino Uno has inadequate current capabilit to power thismodule.5.You must provide a separate,higher 3.3V supply(about 300mA or better)