Description This universal fan speed controller switch is designed for truck and automotive electric radiator fans. Featuring a variable speed regulator and optimized heatsink, it enables seamless fan adjustment to control cooling and noise. Compatible with dc motor speed controller systems, it easily replaces standard switches, offering smooth operation in diverse driving conditions. Features -Color:Black -Material:Plastic/Metal -Size:9.00X3.50X3.20cm/3.54X1.38X1.26in -Adjustable fan speed: this fan speed controller enables speed adjustment for your vehicles electric radiator fan, allowing precise airflow control to adapt to changing driving conditions and cabin comfort requirements -Efficient heat dissipation: designed with optimized heat sink structure, this controller switch reduces overheating risk, prolonging the lifespan of your dc motor dimmer and ensuring consistent, safe performance while in operation -Wide compatibility: supporting both 12v and 24v dc power controller systems, this universal fan controller is for a wide range of cars, trucks, and commercial vehicles, simplifying the installation process -Smooth operation: built with materials, the motor speed controller switch promotes stable and noisefree operation of your electric fan switch, enhancing driving comfort and reducing unwanted sounds -Easy replacement: the regulator switch for vehicle features a universal design, seamlessly replacing most radiator fan switch options in various brands, making upgrades and repairs convenient and quickPackage list: 1 x electric fan speed switch