This is a simple printed shim to mount beneath your Sonoff Basic with a channel to accommodate an un-broken CPC (Circuit Protective Conductor, "Earth" or "Ground" wire depending on your country's standards)

I have only printed this in PLA and it worked out just fine. I have not fitted this in an installation to check dimensions but it should work fine.

Creality

Ender 3 Pro

No

Yes

0.16

20%