WiFi Serial TTL Module "ESP8266-12E". - Circuit Electronics
Amazon.com: HiLetgo 3pcs ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Large) : Electronics
ESP8266 ESP-12E Development Board | Download Scientific Diagram
Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics
NodeMcu V3 Development Board ESP8266 ESP-12E (CH340G driver) – CreateLabz Store
How to program ESP8266-12E using Arduino IDE - Hackster.io