I've got a system that is controlled with UPB and the homeowner would like to add a motion sensor to turn the lights on after the programmed time for shut off for security. I don't know of a UPB motion sensor (it would be nice if one existed). Is there any way to do this other than setting up more robust automation than a simple UPB timer? I thought about have the electrician wire a traditional motion sensor in parallel with the UPB circuits but then I run into phasing issues, which would require a bunch of relays. I'd like to have an inexpensive way to do this but I don't think it exists. ABT won't work because I've already got UPB controls and I'm trying to control both line voltage and low voltage lighting with the same motion sensor. Thanks for the help/suggestions.