If you have an old light switch and no neutral wire, this Magic Switch Mode is a new way to turn your old light switch smart. So far it is available for the new Sonoff Basic R4. It is an alternative to the single live wire type smart switches.

Buy it from here: https://itead.cc/product/sonoff-basic...

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Chapters:
0:00 Intro
0:51 Why use this new mode?
2:46 How it works?
5:02 Visual impact
6:25 Wiring
8:20 Other thoughts
10:14 Outro