WEN DF402iX RV-Ready 4000-Watt Dual Fuel Open Frame Inverter Generator with CO Shutdown Sensor - DF402iX
Remember when you had clean and quiet portable power? The WEN 4,000-Watt Inverter Generator provides clean energy, free of voltage spikes and drops for safe use with laptops, phones, and other sensitive electronics. Our 212cc 4-stroke OHV engine produces up to 4000 surge watts and 3500 running watts on gasoline or 3600 surge watts and 3200 running watts on propane. Designed to mirror a pure sine wave, this generator limits total harmonic distortion to under 0.3 percent at no load and under 1.2 percent at full load, making it safe to run sensitive electronics. 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 ultra-efficient 1.85-gallon tank provides over 7 hours of half-load run time. The fully-packed panel comes equipped with two three-prong 120V NEMA 5-20R receptacles, two 5V USB ports, and one 120V RV-ready TT-30R receptacle. Maximize fuel economy by engaging the eco-mode switch. This allows the generator's engine to automatically adjust its fuel consumption as items are plugged into and unplugged from the panel, preventing the unnecessary usage of gasoline. Need more energy? Easily link up two generators using a WEN Parallel Connection Kit (sold separately) in order to share wattage amongst multiple units. Low-oil and low-fuel automatic shutdown combine with the built-in overload protection and indicator lights to safeguard both your generator and your electronics from damage. And because it’s a WEN product, your open frame inverter generator comes backed by a two-year warranty, a nationwide network of skilled service technicians, and a friendly customer help line, all to make sure you remember WEN.
- Dual fuel 212cc engine generates 4000 surge watts and 3500 running watts on gasoline or 3600 surge watts and 3200 running watts on propane
- Generate clean power to safely operate sensitive electronics such as phones, tablets, televisions and computers
- Parallel-ready panel allows you to connect any two WEN inverter generators for increased wattage output
- 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
- Includes one 120V RV-ready TT-30R receptacle, two 120V NEMA 5-20R receptacles, two 5V USB ports, and a two-year warranty
What Our Experts Think
-
Dual-fuel versatility: Runs on gasoline or propane for flexible, reliable power.
-
High-output performance: Gasoline: 4000 surge / 3500 running watts; Propane: 3600 surge / 3200 running watts.
-
Clean inverter power: Pure sine wave output with THD under 0.3% no load and 1.2% full load—safe for sensitive electronics.
-
RV-ready and portable: Open-frame design ideal for camping, tailgating, and emergency backup.
-
Enhanced safety: CO Shutdown Sensor automatically powers off the generator if unsafe carbon monoxide levels are detected.
Q&A
-
Q: What are the power ratings for each fuel type?
A: Gasoline: 4000 surge / 3500 running watts. Propane: 3600 surge / 3200 running watts.
-
Q: Is it safe for electronics?
A: Yes—pure sine wave inverter output protects laptops, phones, and other sensitive devices.
-
Q: Does it include CO safety protection?
A: Yes—the CO Shutdown Sensor automatically shuts down the generator if unsafe CO levels are detected.
-
Q: Is it RV-ready and portable?
A: Yes—open-frame, lightweight design makes it easy to transport and use outdoors.
Maintenance Tips
-
Change engine oil at recommended intervals to maintain optimal performance.
-
Clean or replace the air filter regularly to ensure proper airflow.
-
Inspect spark plug and fuel lines periodically for wear or buildup.
-
Run the generator monthly to keep internal components lubricated.
-
Use fresh or stabilized fuel during storage to prevent carburetor issues.
