[Auto Start] 2023 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 70°C to 345°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 653°F (345°C) and will not deform or discolor even after working at high temperatures for a long time. Products include: Package including 1 x Heat Powered Stove Fan 1 x English Manual Product Specifications: *Material: Anodized Aluminum *Starting Temperature: 70°C (158°F) *Maximum Operating Temperature: 345°C (653°F) *Airflow: 80-170CFM (cubic feet per minute) *Noise: