12V 1 Channel PWM DC Fan Speed Controller Motor Module Switch Control Module

12V 3A 1Channel PWM DC Fan Speed Controller Motor Module Switch Control 25KHZ

1-10pcs DC12V PWM Fan Governor Speed Control w/ Knob 4Wire Switch Fan Regulation

DC 5-12V Manual 4-wire PWM Fan Speed Controller Regulator with Switch Chassis

DC12V PWM Fan Governor Speed Control With Knob Switch Fan Regulation 2-3/4Wire

4-channel DC 12V 3A 4-wire PWM Fan Speed Controller Fan Speed Control Switch

DC 12-60V 3A Manual 4-Wire PWM Fan Governor Speed Controller with Knob Switch