The Champion Power Equipment 201083 8500-Watt Dual Fuel Portable Generator with CO Shield is the perfect combination of versatility and convenience. Operate your Dual-Fuel generator right out of the box on gasoline or propane, and easily switch fuels with our patent pending fuel select dial that allows for safe switching between fuel sources. Using gasoline, the 459cc Champion engine produces 10625 starting watts and 8500 running watts and will run for 10 hours at 50% load when the 7.7-gallon fuel tank is full. It produces 9565 starting watts and 7650 running watts and will run for 5 hours at 50% load when using a 20-pound propane tank. Includes a 6.5-foot propane hose with a built-in regulator. Covered outlets include 120V 30A locking outlet (L5-30R), a 120/240V 30A locking outlet (L14-30R) as well as four 120V 20A GFCI protected household outlets (5-20R). CO Shield technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by engine exhaust when the generator is running. If CO Shield detects unsafe elevated levels of CO gas, it automatically shuts off the engine. CO Shield is not a substitute for an indoor carbon monoxide alarm or for safe operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.