Switch between gasoline (14500 surge watts 11500 running watts) propane (12500 surge watts 10300 running watts) and natural gas (10500 surge watts 8750 running watts) with a simple turn of the selection dial Operates at 120V and 240V making it perfect for transfer switches and emergency backup Electric start powers the 500c 4-stroke OHV engine with the turn of a key 8.2-gallon tank provides up to 12 hours of half-load runtime Includes four 120V 5-20R outlet a 120V/240V transfer-switch-ready NEMA L14-30R outlet a 120V/240V transfer-switch-ready NEMA 14-50R outlet a 12V DC automotive outlet a bottle of oil a 6-foot LPG connection hose an NG quick-connect adapter and a three-year limited warranty -