Uploaded April 2015 | Updated September 2026, 3 weeks ago

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esp8266 used to control electrical devices connected to relay module.

labviewarduino.in/2015/04/esp8266-control-electrical-devices-from.html

check out the books on using esp8266 on arduino

amazon.com/Nodemcu-dev-kit-using-Arduino-ebook/dp/B01A1R31K2/ref=sr_1_4?ie=UTF8&qid=1455102374&sr=8-4&keywords=esp8266+book

book using lua
amazon.com/How-program-ESP8266-Lua-Getting-ebook/dp/B01BLN6EDG/ref=sr_1_9?ie=UTF8&qid=1455102374&sr=8-9&keywords=esp8266+book