This DC motor speed controller is designed for fan control, power upgrading, and ventilation, enabling you to easily adjust the speed of fireplace blowers and indoor duct fans. Wide speed adjustment range and performance Speed range from 0% to 100% with rotation adjustment Compatible with DC 9V to 60V supply Control current up to 20A Delivers strong, reliable performance for demanding applications For DIY projects An essential tool for DIY enthusiasts and electricians Suitable for managing DC motors in a variety of projects, including automotive applications and home ventilation systems Multifunctional use and practical applications Provides precise control over motor speed for fireplace blowers, computer fans, and more Enables ventilation for home or workspace Use scenarios Adjust a fireplace blower or indoor duct fan to achieve the desired airflow in a living space Integrate into automotive projects to control DC motors and related components Use with computer fans or other DC motors to tailor cooling and ventilation in a workstation or cabinet setup