ESP8266 is a ultra-low power UART-WiFi module. It has excellent dimensions and ULP technology compared to other similar modules. The module is special design for monile devices and Internet of Things (IoT). When devices connect to WiFi with ESP8266 module, it can process LAN communication.
ESP8266 shows in three options: onboard PCB antenna, IPEX connectors, half hole.
Esp8266 can be applied to Smart Grid, Intelligent Transportation System, Smart Home, handset and industrial control system etc.
support wireless 802.11 b/g/n standard
support the STA/AP/STA + AP three work modes
built-in TCP/IP protocol stack, and support multiple TCP Client connection
support rich Socket the AT command
support UART/GPIO data communication interface
support Smart Link intelligent networking
support remote firmware update (OTA)
built-in 32-bit MCU and can be applied as processor
low power consumption, suitable for battery-powered applications
single 3.3 V power supply
ESP8266 Community Forum