I have these 2 Champion 2000/1800 watt generators and the pairing module for sale. I believe it puts out 2000 watts on gas, 1800 on propane. Included are 2 propane regulators. I have had these for several years, did not use them much, but I have kept them maintained, fuel changed each year etc. I found almost this same setup at Home Depot, they wanted $1219 dollars, I am asking a firm $ 550.