Limit switch functionality when powering multiple devices | Home Assistant | Page 1

cinder ocean Jan 21, 2025, 9:49 PM

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Hi,
In my house I have switches that control DCL sockets (special kind of light sockets we use in Norway) placed up under the ceiling. Besides using these sockets for lights, I would also like to use them for a camera and a presence sensor, but the switch should only turn on/off the lights. How would I go about doing that? I've already bought a Shelly 1 Mini, but I can't wrap my head around how I should configure it and wire it up.
Here's the setup with the DCL socket. I've made a ... wire splitter ...? (probably not the right word?) with a DCL plug for the lights and a normal EU plug for the camera and the presence sensor.
https://imgur.com/a/e9E0uKN

Imgur

Untitled Album

dire narwhal Jan 21, 2025, 9:54 PM

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I don't think one shelly is enough to solve this.

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I assume the switch just kills power to that socket, so you need to change the switch to something else that does not do that.
You need something in the light canopy to turn on/off the light, or just get a smart bulb.

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A shelly and a smart bulb could do this, or two shellies (one at the switch and one at the light), or some type of smart switch, and a shelly or smart bulb.

cinder ocean Jan 21, 2025, 10:18 PM

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@dire narwhal Yeah okay. One of the problems is that I live at a rental apartment, so I can't just change the lights. And the lights are some weird proprietary kinds with led's glued to the inside, so I can't change those to smart bulbs.
But would it work with one Shelly in the switch and one in between the two DCL plugs then?

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Like this?

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How would I wire up this Shelly between the two DCL plugs?

oak kite Jan 21, 2025, 10:44 PM

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dcl is actually a eu standard so it should become a quite widespread socket. mandatory for lamp sockets in new buildings.

there are smart dcl sockets available for mounting in the ceiling. you could use those for any spots that will just have lamps.

your splitter could work. you could also hide the shelly inside the ceiling fixture and hook it to the dcl output and see it you can just run a fixed cable out for the camera/sensor. hooked up directly to the input of the shelly so it doesn't get switched.

cinder ocean Jan 21, 2025, 11:02 PM

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@oak kite Oh, I didn't know that. Lived all my life in Denmark, and never seen them before.

There are? I can't find any when I search for "smart dcl" or anything like that?

But if I hid it inside the ceiling fixture it would control both the regular plug and the dcl plug, right? I'm not so familiar with how to wire up shellys.

oak kite Jan 21, 2025, 11:05 PM

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is it possible to sneak the wire for the regular plug into the ceiling fixture and connect it before the shelly? that would avoid the splitter

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this one is zigbee. i don't know if ha supports it. there are probably others.

https://nodon.fr/en/nodon/device-for-the-connection-of-luminaires/

NodOn

Device for the connection of luminaires (DCL)

Connect your NodOn modules easily The device for the connection of luminaires (DCL) allows the relay switch to be quickly and easily connected into a DCL in-wall box

cinder ocean Jan 21, 2025, 11:33 PM

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@oak kite I'm not sure. Then I would have to just put it in between the wall and the fixture? (The fixture is actually placed on the wall all the way at the top.)

That looks quite interesting. I'll have to look into that!

cinder ocean Jan 22, 2025, 1:08 PM

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This will be the wiring at the ceiling fixture then?

#Limit switch functionality when powering multiple devices