I'm looking for a dual stack switch that is dimmable and works with LED's. Could someone please let me know which models are compatible. I need to be able to dim 4 Halo brand LED recessed lights (model RL560WH6940R) on one half of the dimmer, the other half of the switch will control a single Halo (model RL560WH6940R) and does not have to be dimmable.