ESP-12E ESP8266 UART WiFi Wireless Shield Compatible with Arduino UNO R3

You can quickly switch DIP switch ESP8266-12 industrial grade WiFi stable operation mode (such as operating mode and upgrade mode) module, integrated serial chip, quickly flashing the firmware. Built-in 5V to 3.3V TTL level converter to prevent high-pressure Arduino TTL level of the WiFi module damage. Onboard ESP8266-12 stable industrial grade WiFi module with a metal shield, immunity to interference. Onboard ESP8266-12 standard pitch leads to a stable industrial grade WiFi module all interfaces, enabling developers to easily develop deep. Use stackable design, it can continue to accumulate above the other modules, easy to use. Onboard four LED displays the status of ESP8266, namely PWR, DFU, AP, STA Package Included: 1x ESP8266 ESP-12E UART WIFI Wireless Shield TTL Converter for Arduino UNO R3 Mega