DC12V PWM Fan Governor Speed Control w/ Knob 4-Wire Switch Fan Speed Controller
DC12V 4 Wire. PWM signal mode: 5V25KHZ. PWM signal output range: 0%-100%. Output interface model: 2510-4P dislocation, conventional CPU, chassis fan socket, pin spacing 2.54mm. Loss of circuit board itself: less than 20mA without fan.