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 thermistor sensor (B 50K 3950) to adjust the fan speed based on temperature changes, preventing overheating and increasing component . Versatile Compatibility: Compatible with both 2 and 3-wire fans, this module can be easily installed in computer systems, enhancing system efficiency and stability. Noise Reduction Technology: Designed specifically to minimize fan noise, it creates a quieter working environment perfect for gaming and professional setups. Compact Design: The module's 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 circuit or overload!!!) Power interface: XH-3P wiring socket (pin spacing 2.54mm) Fan current: within 0.8A (cannot be overloaded) Fan interface: KF2510-3P wiring socket (pin spacing 2.54mm) Temperature probe parameters: 50K B=3950 Length 50cm Temperature probe interface: XH-2P connector (pin spacing 2.54mm) Temperature probe temperature resistance: circular probe 110C PWM output range: 5% -100% Working temperature: -20℃ to 60℃ Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:PCB Package Contents: 4 x Reduction Module kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.