Let me goto their website and look at the specs for the output signal.....if it's a 0-5v output it'd be a simple design to DIY in a small radioshack project box....
Update from a fellow reefer:
The output of the RKL ACL module is a bit weak and not really designed for LED Drivers. To be honest it may work fine but would not be surprised if it does not. I dont recommend controlling more than one or two drivers.