Quiet EC-Motor 4-Inch Inline Duct Fan - 205 CFM with Temp & Humidity Controller, Ideal for Grow Tents/Hydroponics

Powerful and Energy - Efficient：Featuring a mixed - flow design and an EC motor, this inline duct fan delivers a strong airflow of up to 205 CFM while consuming only 27 watts of power. It is highly energy - efficient, with lightweight ABS blades that reduce airflow resistance and increase airflow by 40%. Ultra - Quiet Operation：Equipped with a high - quality EC motor, the fan operates at a very low noise level of only 26.8 dB, ensuring a quiet environment. Whether it is used in a grow tent, kitchen, or office, it will not disturb your work and life. Intelligent Temperature and Humidity Control：Comes with a smart temperature and humidity controller. There are four operating modes to choose from, including manual mode, time slot mode, cycle mode, and environment mode. The controller can automatically start or stop according to the temperature and humidity, maintaining the optimal environment for plant growth. Easy to Install and Use：The fan comes with all the necessary accessories, including stainless - steel clamps, hang - up slings, and non - vibration rubber mats, making installation quick and easy. It also has a user - friendly design, with an easy - to - operate controller that allows you to freely switch between on/off, timer, and auto modes.