No batteries or electricity required: Chimney fan for stove works without batteries, ropes or electricity In the middle of the bottom of the fan is a unique thermoelectric bi-metal module that converts heat into electrical energy, so the do not need batteries or electricity to turn : aluminum alloy, which is wear-resistant and has good thermal conductivity Automatic start: The rotation of the fan is automatically controlled by the temperature of the lower heating plate Speed of the fan changes with the temperature The higher the temperature of the, the faster the rotation speed of the Warmth and comfort: Our fan fully distributes the heat generated by the stove and distributes it throughout When the wings rotate, the is less than or equal to 45 In winter, you have a warm, quiet and comfortable working and environment practical design: Space-saving 1 The stove fan can be attached to the chimney pipe with a stainless steel, is stable and does not take up much space 2 It is placed directly on the, stable base, easy and safe to use, Manufacturer: Msioytog