This large 12 volt system comes with a high torque motor and the swing door slinger. Uses a 12 volt rechargeable battery and has knock outs for the Boss Buck box mount solar panel or a traditional barrel mounted solar panel. Heavy duty steel mounting plate and 1/4a ^2-20 thumbolts quickly attach and detach from the Boss Buck non-Typical 350, 600 or 1200 series feeders. This design allows for the solar panel to be positioned even after the feeder has been filled. Simply rotate the Conversion kit to the position receiving the most ambient sunlight each day for optimal results. Timer holder allows the timer to stand upright. Simple Set Timer, Digital BIG 12-volt Automotive Blower Motor Steel Control box with timer holder Steel mounting plate & conversion funnel Heavy duty 5a ^2 steel swing door slinger 12v 7ah Battery Sold Separately 12v Box Mount Solar Panel Sold Separately 12v Drum Mount Solar Panel Sold Separately Feed flow and distance control 2 Year Warranty Wingbolts are #6-20 mm Converts BB gravity feeders into automatic corn feeders Converts BB gravity lower units and drop tubes into auto feeders NOTICE: Using salt based feed materials/blends through a Boss Buck control system will void the parts warranty! Salt based mineral supplements, such as Big Tine 30-06 mineral blend, will corrode and rust your feeder control box more rapidly than using corn, protein or other non-salt based feeds.