Keyestudio ESP8266 WI-FI Module Shield +1M Micro USB Cable For Arduino (Chip is CP2102-GMR)
ESP-12E WeMos D1 ESP8266 Wi-Fi Shield for Arduino - ElectroPeak
ESP8266 ESP-12E UART WIFI Wireless Shield TTL Converter for Arduino UNO R3 Mega – ASA College: Florida
Smart Electronics Esp-12f Wemos D1 Wifi Uno Based Esp8266 Shield For Arduino Compatible Ide - Integrated Circuits - AliExpress
ESP-01 ESP8266 WiFi Module with Relay Shield | Paradisetronic.com
Esp-12e Wemos D1 Uno R3 CH340 CH340g WiFi Development Board Based Esp8266 Shield Smart Electronic PCB for Arduino Compatible IDE - China WiFi Module, Dual Core Mode | Made-in-China.com
Makerfabs ESP8266 WiFi Shield (recommended) — DCC-EX Model Railroading documentation
ARDUINO ESP8266 WI-FI SHIELD 1.0 UART
WIFI Shield ESP 12E Strong ESP8266 Development Board Module For Arduin – Aideepen
2 units* WeMos D1 CH340 WiFi Board ESP8266 ESP-12F compatible w Arduino UNO IDE – ASA College: Florida