I don't think the XPFM has a local sensing
circuit in it as it is designed to be inside
the fixture. Also it would need the neutral
wire where it is connected as it needs both
the hot and neutral wire and then the load
is wired to the output lead and neutral wire
lead. I have a few; unused right now; myself.
On the X10Pro web site you can download the
install sheet if you care to.
www.x10pro.com