I just moved into a old apartment, that does not have the neutral wire at the light switch box. However, on this particular light switch box that I’m trying to add a relay switch into, has a power socket nearby, and the live, neutral and earth wire goes through this switch box (not connected to the switch of course).
I have an old Aubess switch that requires a neutral wire available that I want to install into this switch box. The Aubess switch has 6 ports, L-in, L-out, N-in, N-out, S1 and S2.
From the main circuit breaker, live wire comes into the switch box, connected to the manual switch, and manual switch is connected to the light socket. Neutral wire for the light socket goes directly from breaker to the light socket without going near the manual switch. However, due to the aforementioned nearby power socket, I have a set of live, neutral and earth wires from the breaker to the power socket through the switch box.
Now here’s my question: According to Sonoff’s explanation about relays with no neutral, the neutral wire is just so that the relay switch is powered at all times. So if I understood it correctly, I can connect the live wire from the breaker to L-in of the Aubess switch, L-out to the light’s live, spline the neutral wire that goes to the power socket to connect to the N-in, manual switch to S1 and S2, and leave the N-out empty. Is my thinking correct, or is this a disaster waiting to happen?
I could of course just get a no-neutral switch, but if I can safely use this one that I already have, I would just save the e-waste.