appears to be a complete system that was never installed?  probably was set up for a demonstration maybe ?

what you see is what I got.

the keypad seem to have a good amount of cabling(25ft) or so .When I connected the black one it seem to work as expected.

Came from contents of the estate/discontinued home theater company/old stock

it was stored like this as a whole.

Enhance your home audio experience with the Russound CAV6.6 Multizone Controller. This six-channel amplifier allows for seamless integration of up to six inputs and outputs. Its versatile design, coupled with the  Uno-S2 Kypds+ provides an immersive and customizable audio experience in various zones of your home. The amplifier's brand, Russound, is a hallmark of quality in the audio industry, and the model, CAV6.6, is a testament to its innovation and reliability. This product is an excellent addition to any home entertainment system and will elevate your listening experience to new heights. Has original packing material including manual and has original remote. This unit has very little use.