Provides exceptionally quiet and smooth operating for Class A motorhomes and buses without the noise and vibrations usually associated with diesel generators. Runs two air conditioners with power to spare while running quieter than National Park Service sound level requirements. Easy, accessible maintenance points and self-diagnostic capabilities to simplify troubleshooting. High quality, pure sine wave electrical output helps prevent damage to appliances. Features 3-cylinder diesel engine and computer-controlled variable speed operation that matches engine speed to load demand, minimizing noise level. Special sound-controlling housing encloses cooling system and muffler. Three-point, fully focalized mounting system reduces vibration. Digital voltage regulation with no adjustments required. Include overvoltage, low oil pressure, overtemp, overspeed, and overload safeties.