Name: Fireplace fan Number of blades: 5 blades Function: small silver / eco-friendly / hot wind / mild air Features: – Start Automatically: Upgrade Technology, Faster Speed, Larger Air Volume. The heat powered stove fan is designed to circulate the warm air created by a wood / coal or pellet burning. Efficiently circulates warm air throughout the house. Eco-Friendly and Self-Powered: Thermoelectric module acts as a small generator to power the fan’s motor. No batteries or electricity required! Improved warm air circulation results in greater comfort and reduce wood consumption from your stove. Whisper Quiet: Newly Designed Blade, Larger Air Volume, Lower noise. You don’t even know the stove fan is there, but you feel the warmth! You will enjoy the warm air in a quiet and comfortable environment. Safty Design: The stove fan support is made with Anodized Aluminum, able to resist high temperature, no deformation and no discoloration even after long time working under high temperature. Longer Lifetime: There is a Bi-metal safety device in the base of the fan. If the surface temperature rises above around 300°C, the safety device gently elevates the front of the fan to protect the TEG and motor. The Heat powered stove Fans does not bring direct temperature increase but only a tool to accelerate the heat transfer of the chimney. Maintenance-free: just clean it occasionally and put some light oil on the blade shaft to keep it spinning smoothly and quietly! Do not carry the base of the cooktop. Do not place the cooktop on an unprotected surface when it is hot. To move or carry a fan, always use a retractable handle when wearing gloves. Keep your child away when using. The principle of the product: the use of temperature difference to generate electricity 2. This fan is better for small stoves than large stoves. If it is to be used in a large furnace, the product should be placed on the edge of the top of the furnace, not in the middle. The temperature in the middle is too high. When the temperature on the surface of the furnace goes up, the temperature difference will be small, which will affect the air volume and use of the fan. The thermometer is not placed on the fan, but on the stove. The wind of this fan is soft wind, which is mainly used for circulation, not for blowing. If the product still cannot be used at the reached temperature, first check if the wire inside is broken, if so, re-soldering (red wire to red dot, black wire to white dot). Check again if the screws are loose. Note: Because some staff members may be negligent in the process of logistics transportation, please forgive me!