This 2006 Alpine has a Silverleaf software system that controls everything from the driver seat. Includes 8 house batteries with pump fill water for ease of maintenance, a full Sterling tow system with a Guardian vehicle hard top paint protector, residential refrigerator,  hydronic heating system with 15btu air conditioners. Additionally, it has a king size bed and auto open storge bins on the outside. Plenty of storage and a great top of the line coach. This unit is priced well. If you are loooking for a great used quality coach, this is the unit for you.