+1 to the dimming recommendation
Few other examples or ideas about this portion of the ui:
Differentiate between pure sensors (door/window, temp, motion, etc...) and interactive components (plugs, switches, lights, etc...)
Custom ordering/grouping of these objects
Virtual objects (a virtual "switch" could be useful in cases where you want to change things but not have a physical device or circuit activated)
Customizable representations of sensors. Maybe I do not want a slider, but rather a rotating know, vertical slider, or "digital" number interface. Maybe I want the dim value shown instead of a on/off button... that allows me to click and drag to change the value or quick click to turn it on (or off).
Customizable sensor list by user. Ex: I can see all, but my kids can only see/control her room (no turning on my bedroom lights at 2am)