ESP 8266-01

ESP-01 is a WiFi module with Clock speed of 80 MHz, 160 MHz and it supports the RTOS. ESP8266 is high integration wireless SOCs, designed for space and power constrained mobile platform. It provides unsurpassed ability to embed Wifi application, with the lowest cost, and minimal space requirement. It boots up directly from an external flash. Alternately it works as a Wi-Fi adapter, wireless internet access can be added to any micro controller based design with simple connectivity (SPI/SDIO or I2C/UART interface).