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. Specification: *802.11 b/g/n *Wi-Fi Direct (P2P), soft-AP *Integrated TCP/IP protocol stack *Integrated TR switch, balun, LNA, power amplifier and matching network *Integrated PLLs, regulators, DCXO and power management units *+19.5dBm output power in 802.11b mode *Power down leakage current of <10uA *Integrated low power 32-bit CPU could be used as application processor *SDIO 1.1/2.0, SPI, UART *STBC, 1×1 MIMO, 2×1 MIMO *A-MPDU & A-MSDU aggregation & 0.4ms guard interval *Wake up and transmit packets in < 2ms *Standby power consumption of < 1.0mW (DTIM3)