Fangrui Product Details Efficient Pwm Control: This Device Uses Pulse Width Modulation (pwm) To Precisely Control Fan Speed, Ensuring Optimal Performance And Reduced Noise Levels In Computer Chassis. Advanced Temperature Regulation: Integrates A High-accuracy Ntc Thermistor Sensor (b 50k 3950) To Adjust The Fan Speed Based On Temperature Changes, Preventing Overheating And Increasing Component Longevity. Versatile Compatibility: Compatible With Both 2 And 3-wire Fans, This Module Can Be Easily Installed In Various Computer Systems, Enhancing System Efficiency And Stability. Noise Reduction Technology: Designed Specifically To Minimize Fan Noise, It Creates A Quieter Working Environment For Gaming And Professional Setups. Compact Design: The Modules Small Footprint Ensures It Fits Seamlessly Within Computer Cases, Making Installation Effortless Without Sacrificing Space. Working Voltage: Recommended: Dc12v (working Within The Range Of 9-14v) Reverse Input Protection: Yes Output Overload Protection: None (do Not Short Ci