Double Switch (Hotel Switch arrangement)

  • Hi folks!

    In my apartment I've wired up 5 Shelly 1PM's and a Shelly 2.5 for the lights in almost all my rooms. I've got one Shelly 1PM left to go, for my hallway lights and they're configured in a hotel switch arrangement (not sure if this translates well, we call it a "hotelschakeling" in Dutch), where two separate switches operate the same light.

    I have seen wiring diagrams for this type of arrangement on a Shelly 1, but I'm not a 100% sure if I can blindly use that, since the Shelly 1 has dry contacts.

    Here's the situation (sorry for the crude drawings):

    One switch has a Live, switching into two separate wires of which one is always connected to live, both feed into the second switch, which has one output, going to the lamp. That second switch is where the Shelly will go (there's also Live and Neutral available from the adjacent wall socket).

    [Blockierte Grafik: https://i.ibb.co/KL0tNn4/existing-wiring.png]

    No the following are quite clear:

    O - The wire going to the lamp

    SW - The wire coming out of the switch (it'll be under 220V if either of the switches is ON)

    L - The live wire from the adjacent wall socket

    N- The neutral wire from the adjacent wall socket

    I'm only wondering about L1 really. Do I just split the Live wire and plug that in there too? Like the following?

    [Blockierte Grafik: https://i.ibb.co/2ZbbF9t/proposed-wiring.png]

    I'm just not entirely sure that makes sense.

    Thanks in advance for your time and effort!

    (I'm aware the switch needs to be configured as an edge switch)

  • With Shelly 1PM, terminals L and L1 are internally linked together. There's no obligation to connect both terminals to live wire.

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Es reicht nicht“, rief Schiller, „Gedankenfreiheit zu fordern, man muß auch denken können, sonst fordert man Gedankenlosigkeitsfreiheit und die ist die Freiheit zur Dummheit, welche wiederum die schlimmste Unfreiheit überhaupt ist!“
    (Aus „Besuch aus Weimar“ von Gert Heidenreich, Schriftsteller, *1944 in Eberswalde)