Low oil pressure shutdown. Low coolant level auto-shutdown. Exercise time. Vibration isolated from mounting base. Oil drain extension. Fan and belt guards. Enclosed critical grade muffler. Eaton’s molded-case circuit breaker technology. Operating temperature rise 120 °C above a 40°C ambient. NEMAT rated Class H insulation. Natural gas or liquid propane fuel. 5-year limited warranty. Meets EPA emissions regulations. UL® 2200 Listed.