Register Booster Fan For 4 '' X 10 '' Vents Only, 10 Speeds To Control Cool And Warm Airflow, Air Conditioning Vents With Led Sc

The Booster Fan&Nbsp;Is Designed To Increase The Airflow From The Vents. It Turns On And Off According To The Temperature Of The Air In The Duct. It Neither Heats Nor Cools The Air. 1. In Fan Mode, The Wind Speed Is Adjustable From 1 To 10 Levels. 2. In Summer Mode, The Temperature Is Adjustable Between 55-80 Degrees Fahrenheit. When The Temperature Is Lower Than The Set Temperature, The Fan Starts Working. When The Temperature Is Higher Than The Set Temperature, The Fan Stops Working. 3. In Winter Mode, The Temperature Is Adjustable From 70-99 Degrees Fahrenheit. When The Temperature Is Higher Than The Set Temperature, The Fan Starts Working. When The Temperature Is Lower Than The Set Temperature, The Fan Stops Working. 4. Low Power Mode: If There Is No Further Operation Within 1 Minute, The Display Will Turn Off. Press Any Key To Activate The Bright Screen Again. 5. Aroma Diffusion Mode: Drop Your Favorite Essential Oil On The Cotton Pad, And The Whole Room Will Be Filled With Fragrance When The Fan Is Turned On Product Specifications Wattage:9W Voltage:12V Material:Abs Weight:720G Ambient Temperature:55-99F Lifetime:=50000H