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which shelly for 2 way light switch?

  • 27-01-2023 2:23pm
    Registered Users Posts: 1,772 ✭✭✭ bittihuduga

    i have 2 way light switches - one down stairs and one upstairs which control 3 gu10 bulbs (one connection)

    the electrician tried shelly 2pm and shelly 2.5 and shelly 1plus

    but none of them worked.

    we have neutral at the switch too.

    the electrician said he needs power to the shelly which does not exist behind the switch.

    (he tried to give power to shelly via a socket nearby to the switch. but that tripped off the mcb)

    anyone have similar 2 way switches working with shelly - please guide


  • Registered Users Posts: 1,254 ✭✭✭ Nelbert

    Your it really an electrician????

    There has to be a live behind one of the 2 way switches otherwise you'd have no live to power the light....

    The shelly goes in to whichever of the 2 switches has the live and neutral from the light circuit. They feed the shelly and then the shelly can be wired to detect if either switch is flicked.

    Post edited by Nelbert on

  • Moderators, Science, Health & Environment Moderators Posts: 4,512 Mod ✭✭✭✭ Tree

    I had wired my shelly in the two way behind a switch (no neutral) and then, thanks to a borrowed neutral in the landing rewired it to be in the ceiling rose (which has been perfect since). I would skip whatever electrician you have, and go straight to getting someone handy with the electrics to do it in the ceiling rose. is a helpful starting point for the ceiling rose solution to two way wiring.

  • Registered Users Posts: 1,772 ✭✭✭ bittihuduga

    thanks guys.. he was able to do shelly 1pm and shelly 2 pm without any problem. for some reason he couldn't do the 2 way switch. i gave him shelly 1pm, shelly 2pm, shelly 2.5 but nothing worked.

    which shelly did you guys use for this scenario?

  • Moderators, Science, Health & Environment Moderators Posts: 4,512 Mod ✭✭✭✭ Tree

    I used a 1L for the initial installation with the no-neutral behind the switch. (wihout a borrowed neutral it would have been fine, but when I put the bypass in to use an LED instead of a high load filament bulb, it all went to pieces, I've another thread somewhere on that)

    Currently got a 1pm in there as I didn't want to think too much about the wiring compared to the diagram I linked.