Motor Speed Controller, ELEGIANT 90W DC 3V-35V PWM Regulator Dimmer Low-voltage Adjustable Driver Switch Board with LED Indicator With high voltage and high current resettable fuse, overcurrent automatic disconnection, cooling off a few seconds after the automatic recovery fuse, almost never have to change a fuse. Operating voltage: DC 3 V- 35 V Control power: 90 W (Max) Quiescent current: 0.015 A (Standby) PWM duty cycle: 1% -100%. PWM frequency: 10 khz