This panel was removed from my Twin Cessna in perfect working order and replaced with a newer model during an avionics upgrade. It is in great condition as you can see in the photos.
This is for the unit only. No rack, connectors, etc. are included. What you see is what you get.
The Twin Cessna has a 28 Volt electrical system. The manual for this panel describes it as requiring either 13.75 or 27.5 volts. It is available online here: