New Updated Control System with a low speed run to save fuel and reduce noise as well as a programmable exercise modes and cycle times for tighter control.Smart automatic voltage regulator optimizes generator performance wither tighter voltage control giving you less than 5% THD for sensitive electronics and an increased motor starting capability.Symphony II Power Management manages the distribution of power to your selected appliances automatically. Load management ensures the generator won’t overload and shutdown so your family can continue with its daily routine. Available with theTransfer Switch. Commercial Vanguard Engine Our in house state of the art equipment to enhance part control which makes the Vanguard Engine one of the best in the industry. The premium Vanguard V-Twin horizontal engine has been designed and engineered to deliver the most durable performance in the industry.