Wifi module with ESP8266

Model: ESP8266.
Wifi module with ESP8266.
The ESP8266 module is low cost standalone wireless transceiver that can be used for end-point IoT developments.
It employs a 32-bit RISC CPU based on the Tensilica Xtensa L106 running at 80 MHz (or overclocked to 160 MHz). It has a 64 KB boot ROM, 64 KB instruction RAM and 96 KB data RAM. External flash memory can be accessed through SPI.
Features:
2.4 GHz Wi-Fi (802.11 b/g/n, supporting WPA/WPA2),
General-purpose input/output (16 GPIO),
Inter-Integrated Circuit (I²C) serial communication protocol,
Analog-to-digital conversion (10-bit ADC)
Serial Peripheral Interface (SPI) serial communication protocol,
I²S (Inter-IC Sound) interfaces with DMA (Direct Memory Access) (sharing pins with GPIO),
UART (on dedicated pins, plus a transmit-only UART can be enabled on GPIO2), and
Pulse-width modulation (PWM).