ESP8266 – 01 WiFi Module – Ai-Thinker

This ESP8266 – 01 WiFi Module is serial transceiver module is based on the ESP8266 chipset. The ESP8266 modules offer a very cheap way to expand microcontroller projects with Internet connection. ESP8266 has an Integrated TCP/IP protocol stack. In short, the ESP8266 module is a TTL “Serial to Wireless Internet” device. The module runs at 3.3 Volt and the serial port is set to a data rate of 115200 baud.

Specification
802.11 b/g/n WiFi SOC Module
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
Power down leakage current of 10uA
Integrated low power 32-bit CPU could be used as application processor
SDIO 1.1/2.0, SPI, UART
Wake up and transmit packets in 2ms
Standby power consumption of 1.0mW