[Solved] Shelly Wiring Help (Plus2 PM with Momentary Switch)

I need some quick help. Where am I going wrong with this wiring for a Shelly 2 Plus PM? I am mocking up a light setup, and I cannot get this to work. Remove the Shelly from the path and the light switch operates. The device is also powering up and registering into the WiFi, so I haven’t managed to blow it yet!

This is the current wiring setup

This is the front side of the light switch, highlighting this is a momentary switch.

This is probably easier to show you how I have it wired. The wires coming in from the bottom of the image are from the mains. On the wall switch, I am actually using L2, not L1. It doesn’t appear to make a difference. I’ll change it to L1 shortly to make sure. [Edit - switching to L1 doesn’t make a difference]

Sorted. The ‘Live’ on the wall switch needs a permanent live. Also, the ‘Neutral’ I had wrongly interpreted as a neutral (marked as 01 on the Shelly) is actually the switched live. So it goes into the live input of the bulb. Then the output of that bulb, the neutral - connects into the mains neutral. All sorted and working as hoped.

Chris,

Did you ever take a photo of how you finally got your setup to work?
I’m trying the same thing right now! :grin:

I didn’t take a photo I’m afraid.

But take output 1 on the Shelly, marked 01. This is a live output, not neutral. It sends live power to the light, and then off the back of that light is a neutral connection.

It seems odd at first given the Shelly wiring notation, but when you think about the broader electrical setup, it should make sense.

Let me know on a DM if you need more help.

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Thank you. Got it all working!

SHELLY POWER IN SWITCH LIGHT
BOTTOM
N X X
S4
S3
S2
S1 X
TOP
“04”
“03”
L X X
“02”
“01” X

POWER LINE:

  • Connect to “L” and “N” on Shelly

MOMENTARY SWITCH:

  • Also connect to “L” on Shelly, and connect to “S1” on bottom of Shelly

LIGHT:

  • Connect to “01” on top of Shelly, and to “N” on bottom of Shelly

Demonstration: