This controller really PWNs! (Or is that PWMs?)
The World's First PWM Fan Speed Controller - The controller modulates the PWM
(Pulse Width Modulation) fan speed control signal allowing user defined PWM fan
Variety of Control Mode - The 3-Step Automatic Mode and a Manual Mode provide
flexible customization of fan speed control according to the user's environment.
Convenient Controls - The Mode Switch Button, Manual Speed Dial, and Mode
Indicator LEDs provide convenience and ease of use.
Environment Friendly Design - Environment friendly materials incorporated for
RoHS(Restriction of Hazardous Substances) compliance.