Replace X10 in wall switch for remote spot lights

I have 2 applications where external fllod lights were wired behind internal outlets to power with a micro switch to control power to the lights. The in wall switches were added to a single outlet switch for a power leg but there is not a switch leg back to the flood lights.

Is there a in wall switch with z wave that will replace the x 10 in wall switch but only operate the flood lights through z wave. Again, there is only power at the switch location “borrowed” from another switch but there is not a wire connecting the controlling switch to the flood lights.