The Champion Power Equipment 201049 4500-Watt Open Frame Inverter Generator with CO Shield is 1 of the most advanced products on the market. Champion’s recoil start features Cold Start Technology with a reliable 224cc Champion engine that produces 4500 starting watts, 3650 running watts and runs for 17-hours at 25% load when the 2.9 Gal. fuel tank is full. with a 0.6 qt. oil capacity (recommended 10W-30 and funnel included). Economy Mode monitors power consumption in real time to extend your run time. with Economy Mode on, the engine idles lower, providing quieter operation, extended engine life and higher fuel economy. The covered outlets in this RV Ready inverter include a120-Volt 30 Amp RV (TT-30R), two 120-Volt 20 Amp household outlets (5-20R) and a 12-Volt DC automotive-style outlet with a dual USB adapter. 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.