Sonoff BASIC WiFi Smart Switch with Push Button 1Way.
I wanted to add WiFi smart Switch to my regular light switch in home office. I had just classic two wires for turning light on or off. I had an extra wire which I connected and used for powering Sonoff Basic. After modifying Sonoff I was able to use classic wall switch or Sonoff WiFi Smart Switch.
If you don't have any electrical knowledge to do this please call an expert!!!
