The following are required to make the 2800 AP work at home environment.
You need a PoE+ power to power the AP. If you have PoE+ switch then you can use it. If don't have PoE+ capable switch, you need a power injector AIR-PWRINJ6=.
You need Mobility Express image on the AP to run as a Controller/AP. If you have a valid service contract, you can download the image from Cisco software download page for 2800 AP. The image file you need - AIR-AP2800-K9-ME-8-10-151-0.tar