Last Chance: Smart Generator will no longer be available in California after June 30 due to CARB Note: Smart Generator 3000 (Dual Fuel) is only compatible with DELTA 3 and DELTA 3 Plus. Dual Fuel: gasoline and LPG a 20kWh capacity with standard LPG tank for worry-free backup power a Remotely control and real-time monitor using the app a 5 ways to start a 5 security alerts a Seamlessly integrate your LPG power backup a Designed for easy maintenance, and as quiet as 69 dB at a distance of 23 ft.