Well, it looks I've at least identified most of the problem. I replaced the batteries in both the Motion Sensor and the Slimfire remote, and it made no difference. I finally got the Slimfire remote to work when I actually held the remote against the CM15A. I had the Motion Sensor within only about 2 feet during all of my initial testing, and when I moved it away to replace the batteries, I discovered it wasn't working either.
I can only assume at this point that the antenna inside the CM15A is not connected during assembly. Since it is working while the transmitting device is extremely close, the electronics are obviously working correctly. At least I have determined the Motion sensor has a higher output signal than the Slimfire remote.
To make things even more interesting, I opted to move my Lamp Module(HC10LM) to another outlet outside of my office, about 6 feet away, and now it doesn't work at all. And I thought I might get away without a phase coupler.
How much is hobby really cost.
Cypher