Features: Universal Thermopile Connecting type: spiral type and two-pole plug-in type. Long service life. Specifications: Rating: 750 mv Internal resistance (25°C): varies with specifications and length between 1,500mΩ and 4,500mΩ. Normal working temperature: 700-750°C. Lengths: 24 inches（609mm）from shop GAS COMPONENTS STORE Weights: 0.06lbs Usage: 750 Millivolt Replacement Thermopile Generators have long been used in self-powered heaters and hot water equipment. It has been proven in millions of appliances as the contractor's preferred thermopile and are found in many of today's self-powered gas fireplaces. .