Fan Speed Control Module,Thermostat PWM Fan Module,DC 12V 3A 4-Wire PC CPU Fan

Principle?. : This speed regulator only supports 4-wire PWM fans, not 2-wire and 3-wire fans.The probe resistance is 10K, B3950 specification. PWM Frequency: 25KHZ(+/-1KHZ). PWM Range: 1%~100%. PWM Signal Amplitude: 5V.

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