For a longer more detailed explanation head to:
www.DrZzs.com
I decided to tear down a UL approved “smart switch” and compare it to the Sonoff Basic so I could create a modified Sonoff with all the UL-approvable parts included.
I call my new creation the Zzonoff!
All the products I used are also linked at www.DrZzs.com
![](https://i.ytimg.com/vi/B38e1HAMUXs/mqdefault.jpg)