[Heat Powered]This small wood stove fan is a perfect addition to every home that has stove. No batteries or electricity required, but simply the heat from your stovetop, this friendly fan allows you to get the maximum heat from your wood burner stoves. [Easy to Use]No assembly required, you only need to place this mini stove fan on a flat surface of your stovetop, the stove fan will automatically rotate with the temperature higher. The the stovetop is, the faster the stove fan spins and the more warm air the fan circulates. [Operating temperature]The working temperature of this wood stove fan is 60-350C. It starts spinning when the temperature gets around 55C, and works most efficiently when it gets around 200-300C. But please avoid using the fan at high temperature continuously for a long time. Kindly note that its working efficiency will be as per your stovetop temperature. [Whisper and Quiet]The noise level of the fan is less than 25db, the only moving part is the blades,which makes the wood stove fan almost totally silent even at top speed.You even do not know the stove fan is there, but you will still feel a breeze, but not wind from your fan. [Overheating Protection]The stove fan comes with a bi-metallic safety device at the bottom.When the surface temperature rises around 250-300C, it will gently lift the front of the fan to protect the TEG and motor. The fan will automatically recover normally as the surface temperature decreases. Color: Black Material: aluminium Package Contents: 1X Wood Stove Fan 1 X With Chinese and English instructions Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.