Three-Way switch Question

I currently have a light for my stairway. It is wired to a one-way switch.
What I would like to do is replace the existing switch with remote sensor.
At the bottom of the stairs install a wall mounted remote unit. This would
allow me to have switch capability at the top and bottom of the stairs
without running more wires. What I can not seem to find is a wall mounted
remote set. I can find the remote switch sensor and a handheld remote unit,
but this is not what I really desire.

Can anyone help?

Fred