Thanks for answering. Actual wiring is not an issue, I’ve found 0.5mm² automotive wiring in 10m length but it’s more about what kind of connector (like wago but for tiny wiring) I’m not sure.

Bonus would be something that fits a din rail, but that’s totally optional

Thanks, maybe I should at least give one a try.

What worries me is that the led implies that a tiny current flows between the wires (maybe permanently?) and that could perhaps be an issue at the zigbee switch input level (maybe it’s around 3 to 5v), leading to things like false positives, heat, whatnot ?

But let’s see…