Description: 5 pieces Mini DC 3V-35V Motor PWM Speed Controller+5 pieces DC 1.8V-12V Motor PWM Speed Controller 90W DC 3V-35V Motor PWM Speed Controller Switch LED Dimmer. 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: 10khz. With high voltage and high current resettable fuse, overcurrent automatic disconnection, cooling off a few seconds after the automatic fuse, almost never have to change a fuse. DC 1.8V-12V Motor PWM Speed Controller. Max current: 2A (Note: This item can't afford the electrical machine which continuous current more than 0.5A, such as 755 electrical machines and children's motor cars). DC 1.8V 3V 5V 6V 12V 2A Motor PWM Speed Controller. The motor speed controller is with a self-recovery fuse 2A and a Power-On LED light. It can easily provide a continuous current of 2A to your DC motor or other DC load. With the recovery fuse (will automatically disconnect if the current is too big, and will automatic recovery after cooling down). DC 3V-35V Motor PWM Speed Controller Size: Approx 50*25*10/1.96*0.98*0.39 mm; DC 1.8V-12V Motor PWM Speed Controller Size: Approx 3.2*3.2cm / 1.2*1.2 inch Package Includes: 5 pieces Mini DC 3V-35V Motor PWM Speed Controller 5 pieces DC 1.8V-12V Motor PWM Speed Controller