This is a Wi-Fi solution based on IC ESP8266 from Espressif, great device to start work on IOT(Internet of things) 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 pieceB area.
Wi-Fi direct (P2P), soft-AP
Integrated TCP or IP protocol stack
Power down leakage current of <10uA
+19.5dBm output power in 802.11b mode