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Amazon.com: Dorhea ESP8266 ESP-12 NodeMcu D1 Module WeMos Lua 4M Bytes WLAN WiFi Internet Development Board + Relay Shield + 2.54mm 40Pin Single Row Male Pin Header - 3Set : Electronics
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A Quick Guide On NodeMCU Pinout and ESP-12E Pinout, Pin Description,And Peripherals – Matha Electronics
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