ESP-12F

Optimized antenna
802.11 b/g/n protocol
Wi-Fi Direct (P2P), soft-AP
Integrated TCP/IP protocol stack
Integrated TR switch, balun, LNA, power amplifier and matching network
Integrated PLL, regulators, and power management units
+19.5dBm output power in 802.11b mode
Integrated temperature sensor
SDIO 2.0, SPI, UART