I have been using the older X10-powerhouse
transmitters (HR12A) and transceiver RR501. I
just bought Active Home Pro with the CM15A.
The CM15A activity monitor reports "RF
Unknown" and unless I leave the RR501 plugged
in, the RF commands do not work. Is the CM15A
compatibable with my HR-12A transmitter? I
thought I wouldn't need the RR501.