.The ESP-WROOM-02U is a small Wireless Module manufactured by Espressif that can easily be added to any device. It uses the WiFi Modules, 802.11 SMD Module, ESP8266EX and 16Mbits SPI flash. It has UART Mode and U.FL antenna connector. The ESP-WROOM-02U has an ARM Cortex-M processor which provides up to 10 Mbps throughput on the IEEE 802.11 b/g/n networks. Additionally, it supports both Infrastructure and Ad Hoc modes for additional flexiblity. The U.FL antenna connector ensures secure connectivity, and it has an embedded antenna for wider range coverage. The ESP-WROOM-02U module is ideal for low power applications and can be used in a wide range of applications including home automation, industrial and medical.