BAVAGREEN 4 Inch Inline Booster Duct Fan WIFI APP Smart Controller Low Noise EC Motor Ventilation Fan for Grow Tent Heating Cooling
* QUIET & POWERFUL :Mixed flow design combined with a EC motor that powers high-quality impellers makes this fan truly energy efficient than a traditional line fan. With only 35 watts of power but gives a strong airflow up to 212CFM, very low noise level,only produces 28 dB-A, this 4” exhaust fan is silent. Lightweight ABS blades reduce the airflow resistance, add airflow by 40%.
Useful timer function: with the time delay function, you are flexible. Set an individual time period, e.g. B. 30 minutes, and the fan continues to run for 30 minutes after turning off, ideal for energy-efficient ventilation.