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Son/off remote wifi switching

I was looking to eliminate as much noise as I could in my shack. Besides the usual noisy wall warts I found a lot of noise on 10m and 6m coming from a 4 channel Son/off remote wifi switch. I tried using ferrite to eliminate it and no luck, I tried a stand alone 12volt battery still no luck. I thought just for the heck of it I would power it up using the120vac input. Success. No more noise. Thought you guys might be interested to know that. Maybe mine is just an odd unit with a noisy internal supply.


  • Joe N3HEE
    Joe N3HEE Member ✭✭

    I use many Sonoff devices around the house and shack with no RFI issues. They are all powered by 120VAC.

  • normancyyj
    normancyyj Member ✭✭

    All of my switches are now powered by 120vac except one that is using 12vdc. It is the two relay model and makes no noise.

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