PWM Speed Controller designed for 12V 4-wire PWM fan/pump.<br> This PWM Speed controller support 12v standard fan speed control, also support computer water cooling PWM pump speed adjustment.<br> This governor is recommended to control the output power within 7-8 watts (12V 0.6A).<br> This governor input port is USB Type-C female.Output is standard PWM 4pin fan port.<br> Built-in DCDC boost circuit(boost USB 5V to 12V).Built-in pwm signal generator ( to adjust speed).<br> <br> Fan speed adjustment range 0-100.<br> Turn the knob clockwise to increase the speed, Turn the knob counterclockwise to reduce the speed.<br> The application scenario of the governor design is mainly powered by the charging /rechargeable battery, the common output capacity is generally 5V/2A, higher specifications are relatively rare, and the parameters of 12v/0.7A fan almost reach 5V/2A full power supply, while taking into account the small size of the PWM governor so limited cooling capacity.<br> It is recommended that the output current be controlled below 0.7A for short time use and below 0.5A for long time use.<br> Here means the current at the maximum speed, the fan current vary proportionally according to the speed.<br> Input voltage: 5V<br> Output voltage: 12V<br> PWM frequency: about 25KHz<br> Output current: rated 0.5A/maximum 0.7A<br> Input port: USB TYPE-C female port<br> Output: PWM 4Pin<br> Speed range: PWM duty cycle 0-100<br> type: 1 to 2 Adapter cable<br> Colour:Black<br> Material:plastic<br> <br> Package Contents:<br> 1 x PWM Speed Controller<br> 1 x USB to TYPE-C power supply cable<br> 1 x Adapter cable<br> <br> Only the above package content, other products are not included.<br> 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.