SparkFun ESP8266 Thing - Dev Board All module pins broken out - On-board FTDI USB-to-Serial 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 Integrated low power 32-bit CPU could be used as application processor