Material: The stove fan is made of aluminum alloy, so the fan will not deform when heated. The middle of the bottom of the fan can convert heat into electricity, so the blades can rotate without batteries or electricity. Automatic operation: the fan blades are powered by the heat of the oven. The rotation of the fan is automatically controlled by the temperature of the lower heating plate. Fan blade speed varies with temperature. The higher the temperature of the chimney, the faster it spins. Humanized Accessories: There is a temperature indicator panel on the top of the fan, which can display the current temperature of the metal plate to prevent burns when the temperature is too high. Easy to use: No installation required. Simply follow the instructions to install the fan to the side of the woodstove or fireplace, not in front or near the stove. When the fan heats up to 60°C, it starts rotating automatically. Warm and comfortable: in the absence of heating, our stove fans make full