Generac 6237 Guardian Series, 8kW Air Cooled 100 Amp Automatic Transfer Switch,  Standby Generator (Discontinued by Manufacturer) Runs on Natural Gas or Liquid Propane and features hands-free operation with no manual start, no fueling, and no extension cords True Power Technology provides safe, clean and smooth operation of sensitive electronics Includes 100 Amp NEMA 1 automatic transfer switch with 10-circuit load center; 30-foot, 5-foot and 2-foot pre-wired conduits; outdoor connection box; 1-foot flexible fuel line pigtail; composite mounting pad; installation guide and owner's manual. UL, CUL, and EPA Compliant for Safety 5-Year, Limited Warranty from Generac is included