Remcon is still available in the original configs, more or less. Amprobe bought Remcon out a while back, and are producing the relays. They're fairly spendy, but cheaper than re-wiring to 120v switching.
There was at least one electrician that sold the be-jeebers out of the Remcon LV systems around here, except he modified the system down to only the switch legs were LV. And he put the relay/transformers in the octagon boxes above the fixture, the jughead.
I think he was the same guy that sold and installed the Zinsco loadcenters I'm always yanking out now, too