Produce up to 3600 surge watts and 2900 rated watts of power on gasoline or connect a propane tank using the tool-free quick-connector for up to 3500 surge watts and 2600 rated watts of power on LPG. The WEN Watchdog CO Shutdown Sensor helps protect both you and your family by automatically turning off the generator if dangerous levels of carbon monoxide are detected. Our 149cc engine operates at a modest 65 decibels at quarter load. This limits its invasiveness while camping, hunting, tailgating and restoring backup power. The WEN 3600W Inverter Generator is also equipped with fuel shutoff. This feature turns off the flow of fuel, allowing for the generator to use up the remaining fuel from the carburetor before automatically shutting down. This helps fight the build-up and blockages caused by stagnant fuel inside of the carburetor, minimizing maintenance while prolonging the unit's lifespan. This generator limits total harmonic distortion to under 0.3 % at no load and under 1.2 % at full load, making it safe to run laptops, cellphones, monitors, tablets and other sensitive electronics. Ultra-efficient 1.5-gal. tank provides up to 5 hours of half-load run time (or 11 hours half-load run time on a 20-lbs. LPG tank). The fully-packed panel comes equipped with two three-prong 120V NEMA 5-20R receptacles, one 12V DC receptacle, one 120V TT-30R RV receptacle and 2 5V USB ports. Maximize fuel economy by engaging the eco-mode switch.