Thermal fuse. PIEZO ignition. Adjustable angle. Metal sheath. questionable circular burner. Hose and regulator as standard. Automatic gas off. The heater is designed to heat open rooms or areas with good ventilation. It finds excellent use for growing plants because it produces CO2 in combustion, which plants need. For heating industrial buildings (halls, warehouses, workshops), farm buildings (greenhouses, veterinary stations) and buildings under construction. It comes without accessories.