Fireplace Fan For Wood Stove,5 Blades, Environmentally Friendly And Efficient Features： This is a fan that uses heat to electricity as an energy source to circulate the hot generated by the wood burning fireplace. There is a thermoelectric module on the fan, which acts as a small generator to drive the fan motor. When this generator module experiences the heat difference between the and bottom surfaces, it generates current. The bottom of the fan heats the bottom of the module, while the of the module is kept cool by the heat sink of the fan. No battery or power supply is required! In other words, as long as it is placed on the burning stove, it will absorb the heat energy to drive the fan to rotate, thereby blowing the hot above the wood burning fireplace directly to the living area, increasing the circulation in room and improving the heating efficiency of the stove The rotation speed of the fan varies depending on the temperature of the wood-burning stove. The higher the stove temperature, the faster the rotation speed. When the stove temperature is so low that the fire is extinguished, the rotation speed slows down until it stops. product advantages: To save, the fan distributes heat from the furnace to provide better efficiency; Self-generation-no plug-no battery; Quiet operation; Start by itself, adjust speed and stop; and stylish design. Place the stove fan on the flat of the stove, near the side or back of the chimney. The furnace fan is designed for independent stove, and the temperature of the furnace is between 65℃-C 350℃). Temperatures above this range may damage the fan and generator set and invalidate your. Specification Product name: fireplace fan Material: Alumina volume: 180-210 Leaves: 5 leaves Wind speed: 1100rpm Noise: ≦35dB Working temperature: 60-350°c Battery: None OEM: applicable Color: Multicolor Contain: 1x fireplace fan 1x