Briggs & Stratton 10,000-Watt Bi-Fuel Automatic Standby Generator with 50 Amp Transfer Switch 40200 10,000-watt bi-fuel automatic standby generator with Briggs & Stratton 570cc Vanguard engine 50 Amp manual transfer switch for ready-to-go power Designed for cold-weather operation; computer-friendly internal voltage regulator protects equipment Indoor wattage monitor keeps track of power usage Non-CARB Compliant/Not For Sale In California