Muffle Furnace is an innovative new way to heat your home. The Muffle Furnace uses patented technology to create a warm, cozy environment without using any electricity or gas. Simply plug it into a standard outlet and enjoy the benefits of radiant heating.Outer shell made out of thick mild steel sheet duly finished in stoving enamel paint. Fitted with grooved refractory for supporting heating elements working temperature 940oC controlled by superior energy regulator or digital temperature controller cum indicator. Maximums temperature 1000oC. Complete with CI/AL Thermocouple with a pyrometer, thermal fuse, etc.