Dimmer 2 as the 3 way

  • What is the proper wiring diagram to do the following:

    I have two 3 way toggle (on/off) switches. I want to remove one of those three way switches and put the Shelley dimmer 2 in its place.

    The goal is to: turn the light on and off with shelly and still be able to turn the lights on and off with the toggle switch.

    • If I use the toggle switch will it turn on at the last setting?
    • If the toggle switch is off will the shelly still be able to turn the light on?
    • I should have one, but if a neutral is not directly accessible can I connect the N of shelley to my shared common ground back to the bus on the load center to avoid installing a bypass?

    Thank you!

  • A diagram with this type of switches is shown here. Please be aware that the two switches allow on/off only - dimming has to be executed via the WebUI, the cloud or a home automation system!

    „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)