Hello,

https://thesmartcave.com/smart-switch-with-no-neutral/

In the above link, I have a question about how the smart light switch works without a neutral wire. Sure, when the switch is open, you will have a potential difference to power the smart switch. But when the light is conducting current, you will have no potential difference to power the smart switch, correct? How does the smart switch receive any wireless signal to turn the lights back off again if it isnt powered?

Thanks

 

Here is my attempt: https://forum.allaboutcircuits.com/...t-switch-when-no-neutral-is-available.165923/
While the light is on the current runs through a 3.3V zener and this supplies power to be able to switch the light off.

 

How about 2 wire Proximity switches that switch the two conductors and also include a LED indicator when activated?
Max.