Lights flickering, simultaneously in 3 light circuits

  • Hi there,


    I’m using dozenns of Shelly dimmers in my home. Now I’ve installed 3 x Shelly 2 dimmers in my brothers house. All dimmers are in the same electric circuit and control obviously three independent lighting areas with different dimmbare GU10 lights - same lights as I use too. So far so good.


    However, every once in a while, sometimes within short time ranges, sometimes just once in 30 minutes - the lights flicker quite heavily. All three independent light circuits flicker simultaneously, which excludes the root cause being a defective dimmer. The flickering is regardless of the brightness. This makes me wonder what is different with this electrical circuit compared to the other ones in the house.


    Would anybody have an idea what to do?


    Many thanks!!!