Overheating Protection: overheating for protection, the built-in bi-metal strip at the bottom of the oven is designed to slightly raise the edge of the fan while protecting the motor and electrical module : The fan base and propellers are anodised aluminium, which is wear-resistant and has good thermal conductivity : Without battery or main power supply, the electric module can be used as a small generator to power the fan motor Chimney Fan: The 6-propeller fan provides a larger air capacity and rotates the of warm air around your home, but does not deliver hot air directly Quiet: Quiet, dissipates heat in, reduces, increases temperature and improves hot air circulation, resulting in higher comfort and reduces wood consumption in the oven More stable and, Manufacturer: HDOYTXXM