Features: AUTO START: Upgraded technology for faster-speeds and greater airflow. The thermodynamic stove fan is designed to circulate warm airs produced by wood/coal or pellet-burning stove with normal surfaces temperatures of 50°C to 350°C . SAFETY DESIGN: The hearth support is made of anodized aluminum, which does not warp or discolor even after long hours of work at high temperatures. No batteries or electricity required, The stove fan creates its own electricity from the heat produced by your stove. The heat powered stove fan: Increases the efficiency of your freestanding stove oven or wood/ log-burner to generate warmth economically. Saving and environmental protection: The heat powered stove fan is designed to circulate the warm airs created by a wood / coal or pellet-burning.FULLY utilize the heat from your wood stove and disperse it to your room, and make the room warmer quickly,Less Consumption ,More Efficiency--Reduce the fuel consumption. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Operating temperature range: 50 degrees °C to 350 degrees °C Airs volume unit: 150-180 Size: Length: 110MM Height: 145MM Power: Thermoelectric module Package List: Choice 1: 1x 6-Blade Stove Fan Choice 2: 1x Stove Thermometers