For anyone reading the future: connecting the switches to L and Sw does not work. The switches can turn the light off but not back on. I have reverted to N and Sw with the intent to live with the buzzing.
Re: Previous comment. The switches are momentary switches so any load they may create on the Shelly will be momentary. Additionally, and I should have mentioned this before, the LED driver is buzzing not the Shelly.
Hello! I have a slightly unusual 3-way (US) light that I wanted to smarten. There aren't enough wires in the the walls for me to connect both of my wall switches (momentary switches) to Sx so I read that they can be connected to N instead. I've done this and it works but now there is a very noticeable buzzing when the light is on. Previously, the switches were standard, dumb 3-way switches and I tried re-wiring the 3-way with a TP-Link Kasa 3-way switch on one end just to check but neither of these circumstances created the buzzing; just with the Shelly 1L. Any idea why this is happening? Diagram attached.
