It’s called dual fuel technology because it can run on both propane and gasoline. This gives you a lot of freedom and flexibility when it comes to fuel. By shutting off the generator when it senses that the oil level is low, it protects your money. 12,000 start-up watts and 9,500 run time: This unit can handle a lot of power, from lights and refrigerators to a home air conditioner and high-power tools. Plug-and-Play: You get the Propane Regulator, a Remote Start Key Fob, a Battery Charger, Oil, a Funnel for the Oil, a Tool Kit, Heat Resistant Plastic Wheels with Polyurethane Tires, and a User’s Manual to get you going right away (Minimal Assembly Required) Everyone who thinks Toddd made the wrong choice by hiring a certified electrician, I’m sure you’re wrong. What does “manual transfer switch” mean to you? It’s just a breaker or switch that has to be turned on by hand. Isn’t it fine if the electrician built it to the rules? As far as I can tell, the description says the outlet is 50A RV, but I don’t know for sure. This is the outlet next to the switch for the power. In the picture, you can see that the transfer switch is a twist lock. The RV outlet isn’t a twist lock, but it has four holes. It’s 120/240 volts, too. Just to let you know. If you want to do something with the unit that the manual doesn’t say you can do, you’ll need to contact the manufacturer. For example, if you want to convert the unit to run on natural gas, you’ll need to contact the manufacturer to ask about that. It’s not a good idea to ask the general public about something that is only meant to work with Gasoline or Propane. Not to be mean, but that is a very good way to get hurt or damage the unit, so I’d suggest getting your information from the manufacturer if you want to change how the unit works. You need a separate gauge for the propane tank. However, I would not recommend this machine because it doesn’t start in the cold. It’s a piece of garbage in the cold, and the service and support are non-existant. To stop the frost, you should lower the pressure on the tank. I’ve used a lot of propane heaters, generators, and torches, and I can say that this is the best way. The easiest, simplest, and safest way to do that is to get a bigger tank. If a 20-gallon tank freezes, you’re drawing it too quickly. Try a 40-gallon tank, or even a 100-gallon tank. Frozen food won’t bother you anymore after this.