Perfect. Ended up using the standoffs idea.
This is the wall outlet.

This is the switchboard that will be now mounted on wall mount. Wanted to avoid relay board from touching its back side.

This is the relay board now:

Perfect. Ended up using the standoffs idea.
This is the wall outlet.

This is the switchboard that will be now mounted on wall mount. Wanted to avoid relay board from touching its back side.

This is the relay board now:
