Not sure if new, but did not knew about it yet
check this out
for instalation where there is no L N together, it looks pretty neat
Kinda neat but since I live in Germany and we have MANY RULES for electrical installations I would have to contact my electrician about that one to make sure I am allowed to use it like that.
If not, I won’t use it since it would void my whole insurance.
it’s relevant for houses pre-2005 as they were not required to have L N G in each light socket, which is from 2005 mandatory in EU
if you wanna know how it’s working (it’s pretty interesting stuff)
take a look in here
I mean … those chinese are pretty damn clever 