Does anyone have a link for setting one of these up by wi-fi that is in simple native english ? The micro size booklet that came with it needs a x20 magnifying glass to be able to read it, yet alone understand it! 
All manuals are also on https://sonoff.tech/usermanuals/.
POW Original: https://sonoff.tech/product-document/diy-smart-switches-doc/pow-origin-doc/
POW Elite: https://sonoff.tech/product-document/diy-smart-switches-doc/pow-elite-doc/