Isn't CA10 an older controller generation? How and why would I keep my EA5 in service? Right now, it's the main controller running a C4 Video Matrix 1080p, 6 areas with C4 EA1's behind TV's for IR and HDMI baluns via C4 Video Matrix, C4 8x AMP and two C4 I/O Extenders. At most, I'd be able use my EA5 for additional I/O (not needed now) and maybe to run the Zigbee? I don't program my system unfortunately but I somewhat understand the setup. It's also controlling lighting throughout the entire household using C4 switches throughout the house (i.e. not where you run all of the lighting to a central location - forget what that's called). It's a very large project - but I find the most usage to be just for lighting and IR control of the various TV zones and devices connected to the TV's - all of the wiring is run to a central location where the TV receivers and streaming devices are connected.