Feature:  1. Complete 802.1 1b/g/n WIFI SOC module.  2. Built-in Tensilica L106 ultra-low power consumption 32-bit micro MCU, main frequency supports 80 MHz and 160 MHz, supports RTOS.  3. Support GPI0/PWM interface.  4. Built-in Flash.  5. Adopt DIP-16 package.  6. Integrated Wi-Fi MAC/BB/RF/PA/LNA.  7. Support multiple sleep modes.  8. Embedded Lwip protocol cable.  9. Support STA/AP/STA+AP working mode.  10. Support Android, IOS Smart Config (APP)/Airkiss (WeChat) one-click network configuration.  11. Support remote firmware upgrade (F0TA).  12. General AT commands can be used quickly.  13. Support secondary development, integrated Windows, Linux development environment.  Specification:  Package: DIP-6.  size: 13.5*8.5*2.6(??0.2)MM.  Antenna form: External.  Spectrum range: 2400~2483. 5MHz.  Operating temperature: -20~70 degree.  Storage environment: -40 ~125 degree, 500mA.  Support interface: GPIO/PWM.  IO port number Dong: 3.  Serial port rate: Support 110 ~4608000 bps, the default is 115200 bps.  Safety: WEP/WPA-PSK/WPA2-PSK.  SPI Flash: 16Mbit (built-in chip).     PIN: NAME/Function Description.  1: ANT/RF antenna interface, external antenna is required.  2: IO12/GPIO12.  3: IO4/GPIO4.  4: VDD/3.3V power supply; the output current of the power supply is recommended to be above 500mA.  5: IO14/GPI014.  6: GND/Grounded.      Package includes:  1 x ESP-01D