DC 12V PWM Speed Controller Fan Speed governor 4 Wire Computer Temperature control Switch for PC CPU Cooler Fan Manual Stop Product features: Using high-quality materials with guaranteed quality With switch, can be turned off Exquisite product appearance Simple and convenient wiring Stable performance Product parameters: Working voltage: DC12V (can operate at 8-15V voltage, please note that the fan voltage is consistent) Fan current: not greater than 3A. This current is limited by switches and connectors, and can be expanded through a separate power cord Circuit board self loss: less than 20mA without fan connection PWM signal mode: 5V25KHZ PWM signal output range: 0% -100% Starting position PWM adjustment range: 0% -60% Input type: red black line/2510-3P output optional Output interface model: 2510-4P misalignment, conventional CPU, chassis fan socket, pin spacing 2.54mm Function description: Pay attention to the positive and negative poles and the power supply voltage. After the power fan is connected, it can be used. The Potentiometer closes counterclockwise to the end, and the clockwise to the end is the maximum output A separate small adjustable resistor on the board (starting speed adjustment) is used to adjust the speed of the just opened position If the speed change of the fan is opposite to the adjustment direction, it indicates that the fan is a reverse timing fan. It is necessary to short circuit the (PF) setting point with solder, and be sure to cut off the power before operation to avoid damage! After short circuiting, the PWM signal changes in reverse with adjustment, and the reverse timing fan can achieve forward adjustment Precautions: This is a four wire PWM fan governor, which can only control 12V four wire fans that support PWM speed regulation. For example, many 12V four wire chassis or CPU fans cannot control 2-3 wire fans Shipping List Speed control module X1 _x000D_