Automatic operation and costs nothing No installation, no hassle, no battery or power supply! Simply place the stove fan on the stove which has a smooth warm flat surface, it will spin as the temperature rises. Easy and efficient!Energy saving and environmental protection The heat stove fan is designed to circulate the hot air created by burning wood /coal or pellets. Take full advantage of the heat from your wood burning stove and quickly disperse it throughout your room. The room will heat up faster. It continues to circulate hot air to keep the room warm all the time. Less consumption and more efficiencyOverheat protection device The fan is made of anodized aluminum, so it will not rust or corrode in the heat , so it is strong and durable. A bimetallic safety device is installed at the bottom of the fan. If the surface temperature exceeds 345, the safety device gently lifts the front end of the fan to reduce the contact surface between the fan and the wood stove to protect the TEG and the motor.< li>Quiet Whisper Work quietly, no more noise. The unique blade design can conduct more hot air and operate quietly. You will enjoy warm air in a calm and comfortable environment. The only moving parts are the blade assembly. You didn't even know the fan was there, but you felt the heat!High-Strength, High-Performance AluminumThe fireplace fan is made of high-strength aluminum alloy . The stove fan surface is fine and neat. Power generation module and high performance motor. The hotter the base of the fan, the faster the fan spins. It will slow down and stop as the stove cools. Operating temperature: 85 -345