[Auto Start] 2022 upgraded technology, faster speed, larger air volume. Thermodynamic stove fans are designed to circulate the warm air produced by wood/coal or pellet stoves with normal surface temperatures of 80°C to 400°C. 【Environmentally friendly and self-powered】The thermoelectric module acts as a small generator to drive the fan motor. No batteries or electricity required! Better circulation of warm air means greater comfort and the stove uses 28% less wood. 【Safety design】The furnace bracket is made of anodized aluminum, which is resistant to high temperatures up to 752°F (400°C), and will not deform or discolor even after working at high temperatures for a long time. 【Longer Service Life】The fan base is equipped with a bimetal safety device. If the surface temperature exceeds 300°C, the safety device will gently lift the front of the fan to protect the TEG and motor. Products include: Package including 1 x Heat Powered Stove Fan Product Specifications: *Material: Anodized