Stepless Speed USB Fan Controller DC 4-12V 5W Multi Adjustable Airflow Regulator Module For Quiet Operation Mini Desk Fan

High-concerned chemical : none Type : Speed Controls Origin : Mainland China Brand Name : occkic

Features 1. Supports DC 4-12V input voltage to meet diverse application needs 2. Equipped with multi-speed adjustment module for flexible airflow control 3. Achieves low-noise operation for quiet and comfortable use 4. Compact mini design for easy portability 5. Low power consumption and high operational efficiency, energy-saving and eco-friendly for extended use

Parameter Input Voltage: DC 4-12V Output Voltage: DC 2.5-7.5V Rated Power: 5W (Do not overload) Product Features: USB fan airflow adjustment with stepless speed control, freely adjustable from gentle to powerful breezes

Speed Control Principle: Non-adjustable USB fans directly power the motor with 5V electricity. Two-speed fans incorporate an internal boost circuit board. When set to the second speed, this board elevates the USB's 5V voltage before connecting to the motor, increasing airflow. This stepless speed controller outputs a variable voltage range between 2.5V and 7.5V, allowing wide-range airflow customization. Turning the knob clockwise increases speed; counterclockwise decreases it. The knob also functions as a power switch.

Note: 1. When adjusting the fan to two-speed mode, ensure the fan is set to single-speed mode first; otherwise, speed adjustment may fail. 2. Use within the specified voltage range.

Package include Speed Controller*1 label:yes