I have the Harmony Ultimate remote and hub and I have an ISY994i IR/PRO. This is how I accomplish light control:
in My Harmony > Devices > Add Device > Add the Universal Devices ISY controller that you own: ISY 99i/IR, ISY 994i/IR, ISY 994i/IR-PRO
in My Harmony > Activities > select activity you want to control > Change Your Settings > add your ISY controller (mine displays as "Universal Devices Light") and click Next until Done
in My Harmony > Activities > select activity you want to control > Customize This Activity > Add Step > select ISY Controller > select Command > select IR code# then click Save
Now create your program to use the IR code you selected above, eg IR001
I follow a similar sequence to turn the lights back on by adding a step in the Activity Shutdown Commands and use a different IR code, eg IR002
Mike
