Dear all, for anyone looking at this thread. Have now got myself the R-Com, and so there isn't any doubt at all, it works perfectly with CD5/112x/150x combo as advised above. No problems at all.
On another note, the battery life doesn't seem as horrendous as everyone says it is. Im on month 6 of the original batteries! The motion sensor is a bit strange though. Comes on unprompted quite alot. But don't know if thats just my handset or if everyone has that issue.
Anyway, FYI