I purchased a Shelly 1 for some spotlights which are controlled by a 2 way switch. I got an electrician to install the Shelly but he told me it wouldn't be possible to wire it without blocking off 1 of the switches as the switched live and live are at different switches. Is there a way it can be wired without blocking off 1 of the switches.
This is the switch with the netural and switched live
This is the switch with the live
This is the wiring in the rose of the spot lights
Is it possible to wire a Shelly 1 to get both the switches working or would a Shelly 1L be better in this instance? What would the wiring diagram look like when connecting it up?